Turbellaria from the Atlantic coast

15 p. : ill. ; 24 cm.Includes bibliographical references (p. 8-9).Two new acoels, one new alloecoel, one new marine triclad, and one new polyclad, are described from the Atlantic coast of North America. 2. The acoels are Afronta aurantiaca, family Proporidae, and Ectocotyla paguri, new family Ectocotylidae, both from the Mt. Desert Island region, Maine. The former lacks frontal glands and accessory female structures. The latter is one of the most remarkable acoels yet discovered, having a protrusible plicate pharynx and caudal adhesive disk provided with adhesive papillae; it also appears to be viviparous. It is epizoic on the hermit crab Pagurus pubescens. 3. Plagiostomum album, also from the Mt. Desert Island region, is described. 4. The marine triclads Procerodes littoralis (Ström), 1786 (= Procerodes ulvae), and Foviella affinis (Oersted), 1925, are reported from Brigus, Newfoundland; hence these species are distributed in the North Atlantic from Newfoundland to Scandinavia. Procerodes wheatlandii Girard, 1850, found on the Massachusetts coast, is considered to be at best a geographic variant of P. littoralis. 5. A new marine triclad, Probursa veneris, new family Probursidae, [from the] shores of Long Island, New York, differs from all known triclads in the far posterior position of the ovaries and differs from all other marine triclads in having the copulatory bursa situated anterior to the penis bulb. 6. A new polyclad, Comprostatum insularis, family Cryptocelidae, is described from the Florida keys"--P. 8

Planarians

25 p. : ill. ; 24 cm.Includes bibliographical references (p. 24-25)

Turbellarians

8 p. : ill. ; 24 cm.Includes bibliographical references (p. 8)

Fresh-water Turbellaria

36 p. : ill. ; 24 cm.Includes bibliographical references (p. 33-36)

Taxonomic studies of the hydras

9 p. : ill. ; 24 cm.Includes bibliographical references (p. 9).Description of Hydra cauliculata, new species -- Further notes on Hydra littoralis Hyman, 1931 -- Distributional notes on other species

Flatworms

33 p. : ill. ; 24 cm.Includes bibliographical references (p. 32-33)

Rhabdocoela and Alloeocoela.

19 p. : ill. ; 24 cm.Includes bibliographical references (p. 18-19)."Hydrolimax grisea Haldeman, 1842, after having disappeared from notice for forty-five years has been rediscovered in New Jersey and found to be an alloeocoel of the family Plagiostomidae, the first fresh-water plagiostomid known for North America. Hydrolimax constitutes a valid genus of Plagiostomidae and differs from the other genera of this family in the combination of follicular ovaries, unarmed penis, and extraordinarily large granule vesicle. In its general anatomy and histology it strongly resembles Plagiostomum"--P. 18

Land planarians in the United States

21 p. : ill. ; 24 cm.Includes bibliographical references (p. 21)."Three exotic land planarians have established themselves out of doors in California and are reproducing sexually. These are Geoplana mexicana Hyman, 1939, G. vaga, new species, and Bipalium adventitium, new species. The sexual anatomy of all three species is herein described. 2. In addition, various other exotic land planarians have been found in greenhouses in the United States. The most common ones are Dolichoplana striata and Bipalium kewense. The latter is also established out of doors in Louisiana and southern Florida. 3. The anatomy of the North American endemic land planarian, Rhynchodemus sylvaticus Leidy, 1851, is described for the first time, and it is shown that this species has the anatomy of the genus Desmorhynchus Heinzel, 1929. As R. sylvaticus is the type of the genus Rhynchodemus, Desmorhynchus becomes a synonym of Rhynchodemus. This necessitates changes in the subfamily names of the Rhynchodemidae. Dolichoplaninae is proposed in place of Desmorhynchinae Heinzel and Geodesminae in place of Rhynchodeminae Heinzel. Geodesmus Mecznikow, 1866, is the next available name for species previously put in the genus Rhynchodemus which do not agree with R. sylvaticus in general anatomy. 4. Three other endemic North American land planarians are described: Rhynchodemus americanus, new species, Geodesmus atrocyaneus (Walton), 1912, and Diporodemus indigenus, new species. The first closely resembles R. sylvaticus in general appearance and sexual anatomy. Of the second, not again recorded since the original description, a number of specimens were taken in the central states. Unfortunately no sexually mature specimen has been found. The third species occurs throughout the Appalachian region in humid habitats and is a very interesting form with several peculiarities of the sexual complex"--P. 20

Fresh-water planarians from the vicinity of Portland, Oregon

5 p. : ill. ; 24 cm.Includes bibliographical references (p. 4-5)

Land planarians

21 p. : ill. ; 24 cm.Includes bibliographical references (p. 19-21)