In the course of certain studies upon Gordiacea, I have determined two new species of Chordodes (CREPLIN), a genus closely allied to Gordius, from Borneo and Africa, and these forms are here described; the publication of the systematic results of my studies upon the american species of this group being postponed until I have an opportunity to compare more material. 1. Chordodes furnessi n. sp. 2. Chordodes albibarbatus n. sp

Montgomery, Thomas H.

English

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Naohilruclc  fJ6rboten. Ueber8et~ung8recht vorbekalten. Descriptions  of  two  new  exotic  species  of  the  genus Chordodes. By Thos. H.  Montgomery jr., Ph. D. With pla.tes  21 a.nd  22. In the course of certain studies upon Gordiacea,  I have determined two  new  species  of  Ohordodes  (OREPLIN),  a  genus  closely  allied  to Gordius,  from  Borneo and  Africa,  and these forms are here described; the  publication  of  the  systematic  results  of  my  studies  upon  the american  species of this group  being postponed until I have an oppor-tunity to  compare more material. 1.  Ohoraoaes furnessi n. 8p. 2  specimens,  a  male  and  a  female,  from  the  abdomen  of two  different  species  of  leaf  Mantids1);  these  were  collected  by Dr.  W.  H.  FURNESS  in Borneo,  in  honor  of whom  I have the pleasure of naming them. Out  i c 1  e  with  three  kinds  of  tubercles:  1)  The  largest  are rounded  at the apex,  and  usnally  about 11/8  times  as  long  as  they are broad; they vary considerably in shape,  and while they are usually thickest  at  the  base,  are  sometimes  nearly  square  in  outline,  and sometimes  thickest  around  the  middle part.  On  the  rounded  apex occur short,  curved  hairs,  the  number  and  diameter of which  varies on  different  tubercles.  As seen  on  surface  views  in  Oanada balsam, these  tubercles have  the appearance. of  rings,  with  a  darker  outer . 1) My colleague Dr. PHILIP P. C.A.LVlilRT,  of the University of Penn-sylvania,  has kindly identified for  me  the hosts  of these two specimens of  Ohordodes  as  follows:  the  female  specimen  from  the  abdomen  of Hierodula sp.;  the  male from  the  abdomen  of Deroplatys sp. Zool. Jahrb. XI.  Abtb. f. Syst. .  26 380  THOS.  H.  MONTGOMERY, zone  and an inner clear spot;  sections  show  that  this  central. clear spot is  not the  opening of a  pore or canal,  but  that  it is  merely  a core  of  lighter and less  refractive substance,  which  is  surrounded by a darker and more deeply-staining peripheral layer.  2) Tubercles which are usually of less  than  half  the  height  of  the  preceding,  and  are either hemispherical or of a  rounded  conical  outline.  These also bear hairs  upon  their  apices,  but the  hairs  are less numerous  and  more delicate  than  those  of the preceding tubercles,  and may be seen  only by  careful  focussing  with  the  immersion  lens  (1/12  of  ZEISS). 3)  Hyaline processes  which·  are  not  seen  upon  surface  views,  and which  are  usually  either  club-shaped  or  finger-shaped;  these  pro-cesses  which  may represent sense-organs, are  always  slender in form, but may attain nearly the altitude of the first  kind of tubercles. The  tubercles  of the first  order are arranged  into  two  kinds  of groups:  1)  They  occur in  pairs, the  two  components  of such  a pair being in  close  contact, while  the longitudinal axis of the two lies more or less  in  the  transverse  plane  of  the  body.  These  isolated  pairs - which are occasionally represented by groups of 3 or 4 - are usual~i placed at quite  regular distances  from  one  another,  and the tubercl~~ composing them  are as a  rule slightly larger  than  those  which  form the next kind  of groups.  2)  The  greater  number  of these tubercles (of the first  order)  occur in  groups of about  15 to 20,  in  which  the individual tubercles  are not in  contact  with  one  another ;  the number of these larger groups is not quite  as  great  as  that  of  the  groups of twos.  The  second  kind  of tubercles are the most numerous of all, and are not arranged  into  groups.  The third kind occur singly and sparingly, and are the least numerous of all,  though they are somewhat more  numerous  on  the ends  of the  body than elsewhere,  especially on the posterior end  of the female.  Cuticular tubercles are wholly absent on the· tip of the  head. For  m.  In the male  the  body  is  cylindrical,  the  anterior  end gradually. diminishing  in  diameter; the head is small,  obtusely rounded at the  apex,  and narrower  than  the  portion  immediately  preceding. The posterior  end  of the body  (for the length  of three-eighths of  an inch)  is  narrower than  the part preceding;  the dista}  end  of body,  as seen  on  lateral view,  is  truncated,  there  is  a  slight ventral groove in the median line,  which  extends  from  the  distal  end  to  the  cloacal opening,  which  is  not  terminal.  Female of  greater  diameter  and length  than the male; the posterior end of the  body  (for  the  length of  half  an  inch)  is  narrower  than  the  part  immediately preceding, 382  THOS.  H.  MONTGOMERY, distal  cap  of each tubercle  bears  a  large  number  of  densely-placed thick,  white  hairs,  which  are not attenuated  at their distal ends  but are of equal  diameter  throughout;  the most central of these hairs are somewhat longer than  the tubercle  itself.  These  hairs  are  not  stiff in  texture;  they are  densely grouped,  covering  the  whole  surface  of the  distal  cap  of  the  tubercle,  and  the  laterally-placed  ones  are somewhat  pendant,  so  as to  partially  cover  over  the  apices  of  the contiguous  tubercles.  2)  Tubercles  which  are  grouped around  each pair of the preceding,  there being from  20 to 30 in  each group.  On surface  views  these also  appear as  dark rings,  but  they  are of  only 1/2  or  l/S  the  diameter  of  the  preceding  kind.  Those ne.arest  the centre  of each group,  i. e.  those  immediately adjacent to  the central pair of tubercles  of the first  order,  are higher  than  the  more  peri-pheral ones,  and may  be  even  of  somewheat  greater  elevation  than the tubercles  of the first  order;  but  they  are always  more  slender in shape,  and  have  a  more  or less  pointed  apex.  The tubercles at the periphery  of each group  are of  still  smaller diameter,  and are conical or pyramidal in  outline.  Each tubercle  bears  upon its apex a number of short,  fine  hairs.  3)  Tubercles,  the  shortest and most numerons. of  all,  of  about  the height of the lowest of those  of  the  2nd order. These  have  usually  a squarish or hemispherical form,  though they vary considerably  in  shape;  they  do  not  bear hf!.irs  nor  do  they  appear like  rings  upon  surface  views.  They  are  not  arranged  into  groups~ but occur  close  together,  filling  out the  spaces  between  the groups of tubercles  of the  2nd  order;  their  color  is  yellowish-brown.  4)  The last kind  of  prominences  are  delicate,  club-shaped  processes,  which occur  only  sparingly,  and  which  attain  the  height  of  the medium-sized tubercles  of type  2; these are not seen  upon  surface  views. When  studied  in  alcohol  before  clearing  in oil,  the cuticle  has quite  a  different  appearance from  that  just described.  A  system  of intersecting  lines,  which  apparently  have  their  position  in  the fibrous  cuticula  of  VEJDOVSKY  (in:  Z.  wiss.  Zoo!.,  1886), are to  be seen,  between  which  lie  rhomb·shaped  spaces.  Each  of  the groups, of  tubercles  (formed  of  tubercles  1  and  2)  appears merely  as a  high eminence  covered  with  snow-white  hairs,  the  latter completely cover-ing  and  obscuring  the  tubercles  of  the  2nd order which lie beneath .  them.  Between  these  white  eminences  are  seen  the tubercles of the third  order,  though  the  hyaline,  club-shaped processes are not seen ,at  all.  But  such  alcoholic  preparations  show  one  kind of tubercle which  is only  very faintly  marked  on  cleared  preparations:  name1Yt : I I j Two  new  exotio species  of the  genus  Chordodes.  383 interspersed  among  the  tubercles  of  the 3rd order are  small  groups of  three  or  four  tubercles  each,  which  differ  from  their neighbors merely in their darker color and sligthly greater size.  Accordingly, in these tubercles  we  have  a  fifth  kind  of cuticular tubercles. Tubercles  are  absent on the tip  of the head. For  m.  The  anterior  end of  the body is attenuated and some-what  pointed,  while  the  tip  of  the head is  obtusely rounded.  The body is  cylindrical  without  superficial  grooves,  and  thickest  in  the posterior  half.  The  extreme  distal  end  is  narrower  than  the  part immediately  preceding,  with a· deep  median groove  upon  the termino-ventral  aspect;  to  each  side of this groove is  a  rounded, longitudinal Tidge,  these  ridges  extending  only  for  a  short  distance  upon·  the -ventral  surface of the body.  Anterior to  this groove, upon the ventral surface  of the body, lies  the  cloacal  aperture,  which  is slightly elon-,gate  in  form.  At each side  of this  aperture,  and at a  little distance from  it,  is  a  longitudinal row  of  hairs,  which  are shorter and more -delicate  than  the hairs of  the  longest papillae (tubercles).  Leaving out  of  consideration  these rows of  hairs,  the posterior  end  has  the . shape  characteristic for  the males of this genus,  which serves to easily distinguish them from  the males  of the  allied  Gordius (cf. JANDA,  in": Zoo!.  Jahrb.,  V .. 7,  Syst.,  1893. 001  0 r.  Head  a  pale  yellowish;. white,  and  the  ventral  surface -of  the  body  in  the  region  of  the  cloacal  aperture the  same  color. Elsewhere  of  a  yellowish-brown,  thickly  mottled with  deep  reddish-brown  spots  of irregular  size and  shape, which are easily  seen with the naked eye. This is apparently an immature individual,  since  spermatozoa are .absent in the vasa  deferentia in the middle body  region. Length 223 mm; greatest diameter  1,25 mm. This species  is apparently closely related to O.  bouvieri  of VILLO~, .but  differs  from  it in that the hairs  of the tubercles of the 1st order are much dicker and longer, and are not di.rected  downwards (cf.  the figure  given  by  VILLO'.r~  in:  Ann.  Sc.  Nat.,  1887,  Zoo!.).  The hairs of  the  largest  tubercles  in  our new species  have  nearly  the massive form  characteristic  for  those  of  O.  ornatu8  (cf.  GRENACHER,  in:  Z. wiss.  Zool.,  1868). 24th May 1897, Wistar Institute of Anatomy,  Philadelphia. 384  MONTGOMERY,  Two  new  exotic  species  of the  genus  Chordodes~ Explanation of the Plates. (The  outlines  of all figures  have  been  drawn with the  camera lucida.) Plate 21.  . Fig. 1-6.  Ohordodes  turnessi n.  Sp. Fig.  1.  Outline  of  the  head  end  of  the  female  (ZEISS,  obj.  A,. oc.  2).  m  mouth. Fig.  2.  The  same,  male  (idem). Fig.  3.  Outline  of  the posterior  end  of  the  female,  ventral view (idem).  c  cloacal  apertm·e.  .  . Fig.  4.  PosterIOr  end  of the male,  lateral  VIew  (Idem).  . Fig. 5.  Surface view of the cuticle,  from  a  preparation in balsam (obj.  C,  oc.  4).  a  tubercles  of  the  1st order,  b  tubercles  of  the 2nd order. Fig.  6. a  tubercles Transverse section  of the  cuticle  (hom.  imm. 1/12,  oc.  2). of the  1st  order,  b  of the  2nd  order,  c  hyaline  processes. Plate  22. Fig.  7-11.  Ohordodes  albibarbatus  n. sp. Outline of the head  end,  lateral view  (obj.  A, Posterior  end,  oblique  lateral  view  (idem). oc.  2). c  cloacal Fig.  7. Fig.  8. aperture. Fig.  9.  Surface  view  of  the  cuticle,  as  seen in alcohol  (obj.  C, oc.  2).  a  tubercles  of the 1st order,  b  of the  2nd  order,  c  of the Brd order,  d  hyaline  processes  (tubercles  of the 4th  order),  e  tubercles of the 5th  order. Fig.  10  ..  Surface view of the  cuticle,  from  a preparation in balsam (obj.  C,  oc.  4).  Lettering as for Fig.  9. Fig.  11.  Transverse section  of the  cuticle (hom.  imm.  1/12)  oc. 2). Lettering as  for  Fig. 9. , , 'j'l •. '  •.••  ,.i.~  ••••..  -§ ~ ,  , I ,  ! I ~ ,  ' r r F  , , I , I I i ,,/ J  ·,'.f  -', ...---, I !  , fl. . \  , 1 \ I \ f~tJ I flgS!. / I I' , i I I i ! F(q.3. c '. I \ \ 'r.'  AI  1'tg.  "1-. \ lal!!l , , ! j I I ! i i I i ,  .- ----~.-----.-- ,.., Fl.g.8. ; I ·······•·· 1iir11 · -----.---~ i I \ I \ I I .f1'g.10 ---------_.  -~.- .~--- ,._------_. '/"  •  1  ) 1i~/  ..  :~.l:.  . .  , " , 'I· I 

Description of two new exotic species of the genus Chordodes

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