Note on Charybdis erythrodactyla (Lam.), Charybdis acutifrons (de Man), and Charybdis obtusifrons nov. spec

In the collections of the Leiden Museum I found three groups of specimens, which had been classified as Charybdis erythrodactyla (Lam.). I also examined Charybdis acutifrons (de Man), of which hitherto only one specimen (the type specimen) has been mentioned in literature. It appeared that Dr J. G. de Man did not observe that this specimen has seven antero-lateral teeth, of which the second and fourth are very small. This species belongs to one of the three above-mentioned groups. The three groups show very distinct differences. Therefore I consider them to be three species, viz., Ch. erythrodactyla (Lam.), Ch. acutifrons (de Man), and Ch. obtusifrons nov. spec. In a subsequent publication I hope to discuss the place of these species in the genus Charybdis and the literature on Ch. erythrodactyla (Lam.). In the following descriptions I only mention the most important literature. Charybdis erythrodactyla (Lam.) (figs. 1—5) Material: One male and one female (Mus. Godeffroy), Marquesas, coll. Leiden Museum. These specimens are identical with those mentioned by Randall (Thalamita pulchra, Journ. Acad. Nat. Sci. Philad., vol. 8, 1839 (1840), p. 117, pl. 4), Milne-Edwards (Thalamita Teschoiraei, 1851, Ann. Sc. Nat., Zool. (3), vol. 16, p. 250, pl. 10, figs. 5, 6, 7), Rathbun (1906, Bull. U. S. Fish Comm. for 1903, pt. 3, p. 872, pl. 4) and Boone (Bull. Vanderbilt Marine Museum, vol. 5, 1934, p. 57, pls. 18 and 19), probably also with the specimens of Nuka-Hiva (coll. Paris Museum) determined by A. M.-Edwards and figured by Nobili (1906, Bull. Scient. Fr. Belg., vol. 40, p. 118, fig. 3). Description: The carapace is rather convex, bare, with some rather fain

Notes on Charybdis demani nov. spec., Charybdis variegata var. brevispinosa nov. var. and other Charybdis-species

Examining the material of the genus Charybdis de Haan in the RijksMuseum van Natuurlijke Historie and in the De Man-collection in the Zoological Museum at Amsterdam for comparison with material of the Siboga expedition and other expeditions for Prof. Dr Max Weber and the Zoological Museum at Amsterdam, I made the following notes. I am very much indebted to Prof. Dr H. Boschma for his kindness in placing his material at my disposal and for his hospitality at the Leiden Museum. Charybdis (Goniosoma) merguiensis (De Man) Goniosoma merguiense, De Man, 1888, Journ. Linn. Soc. Zool., vol. 22, p. 82, pl. 5 figs. 3 & 4;1895, Zool. Jahrb. Syst., vol. 8, p. 560. Charybdis (Goniosoma) merguiensis, Alcock, 1899, Journ. As. Soc. Bengal, vol. 68 pt. 2, p. 56; Nobili, 1899, Ann. Mus. Civ. Storia Nat. Genova ser. 2a, vol. 20, p. 254; 1900, p. 498; 1903, Bull. Mus. Torino 18 no. 455, p. 31; Lenz, 1905, Abh. Senckenb. Naturf. Ges., vol. 27, p. 360; Monod, 1930, Zool. Anz., vol. 92, p. 140, fig. 7; Steinitz, 1933, Pubbl. Stat. Zool. Napoli, vol. 13, p. 151; Chopra, 1935, Rec. Ind. Mus., vol. 37, p. 484 textfig. 8. Goniosoma annulatum, De Man, 1883, Notes Leyden Museum, vol. 5, p. 151. When I examined the Charybdis annulata material in the Leiden Museum I found that the six specimens (3 ♂ ♂ and 1♀ in the Hoedt-collection and 2 ♀ ♀ in the Schorel-collection) from the shores of the island of Amboina (De Man, 1883) belonged to Charybdis merguiensis (De Man). They all had the characteristic spine at the posterior border of the carpus of the natatory leg. Chopra (1935) compares the length of the carapace with its breadth, an

On some Portunid crabs from the Indo-westpacific region

In 1939 during a visit to the British Museum, London, the first author (Leene) examined a number of indo-westpacific Portunidae belonging to the collection of this Museum. Part of the material was then reserved to be studied more extensively in Holland. Through the outbreak of World War II it was not before 1947 that this material came to Holland; it then was taken from London to Leiden by the second author (Buitendijk). The material was studied jointly by the two authors, who intended to publish the results of this study as a single paper. Circumstances beyond the control of the authors, however, necessitated the separate publication of a report on only three of the species (Leene & Buitendijk, 1949). The present paper deals with the rest of the material and with a new species of the genus Charybdis from the collection of the Rijksmuseum van Natuurlijke Historie at Leiden. Also some material of the genus Lupocyclus from the Amsterdam and Leiden Museums, which has been used for comparison with the specimens from the British Museum, is discussed here 1). The first author wants to tank Dr. L. B. Holthuis, Leiden, for writing Miss Buitendijk's biography and for his kind and adequate assistance in preparing this paper for the press. Lupocyclus philippinensis Nauck Lupocyclus philippinensis Leene, 1940, Temminckia vol. 5, p. 174, text fig. 5, pl. 3. British Museum (Nat. Hist.) Karachi, May 29, 1906. — 1 female. Remarks. The specimen from Karachi undoubtedly belongs to Lupocyclus philippinensis, though it presents some differences from the specimen described by Leene in 1940. The cephalothorax has the groups of granule

On some Portunid crabs from the Indo-westpacific region

In 1939 during a visit to the British Museum, London, the first author (Leene) examined a number of indo-westpacific Portunidae belonging to the collection of this Museum. Part of the material was then reserved to be studied more extensively in Holland. Through the outbreak of World War II it was not before 1947 that this material came to Holland; it then was taken from London to Leiden by the second author (Buitendijk). The material was studied jointly by the two authors, who intended to publish the results of this study as a single paper. Circumstances beyond the control of the authors, however, necessitated the separate publication of a report on only three of the species (Leene & Buitendijk, 1949). The present paper deals with the rest of the material and with a new species of the genus Charybdis from the collection of the Rijksmuseum van Natuurlijke Historie at Leiden. Also some material of the genus Lupocyclus from the Amsterdam and Leiden Museums, which has been used for comparison with the specimens from the British Museum, is discussed here 1). The first author wants to tank Dr. L. B. Holthuis, Leiden, for writing Miss Buitendijk's biography and for his kind and adequate assistance in preparing this paper for the press. Lupocyclus philippinensis Nauck Lupocyclus philippinensis Leene, 1940, Temminckia vol. 5, p. 174, text fig. 5, pl. 3. British Museum (Nat. Hist.) Karachi, May 29, 1906. — 1 female. Remarks. The specimen from Karachi undoubtedly belongs to Lupocyclus philippinensis, though it presents some differences from the specimen described by Leene in 1940. The cephalothorax has the groups of granule