360 A. Alcock — Carcinological Fauna of India. [No. 



54. Gelasimus Marionis var, nitidus, Dana. 



Gelasimus vocans, Milne Edwards, Ann. Sci. Nab., Zool., (3) XVIII. 1852, p. 145, 

 pi. iii. fig. 4 (nee Hist. Nat. Crust. II. 54) : Stimpson, Proc. Ac. Nat. Sci. Philad. 1858, 

 p. 99 : Heller, Novara Crust, p. 37 : Hilgendorf, in v. d. Decken's Reis. Ost-Afr., 

 p. 83: A. Milne Edwards, Nouv. Archiv. da Mus. IX. 1873, p. 272 : Hoffmann, in 

 Pollen and Van Dam's Fann. Madagasc. Crust, p. 16 : Miers, Phil. Trans. Roy. Soc. 

 Vol. 168, 1879, p. 488, and Ann. Mag. Nat. Hist. (5) V. 1880, p. 308, and Challenger 

 Brachynra, p. 242 : Richters, in Mobius, Meeresf. Maurit. p. 155: de Man, Notes 

 Leyden Mus. II. 1880, p. 67, and XIII. 1891, p. 23, pi. ii. fig. 5, and Archiv f. 

 Naturges. LIII. 1887, i. p. 352, and in Weber's Zool. Ergebn. Niederl. Ost-Ind. II. 

 1892, p. 305, and Zool. Jahrb. Syst. VIII. 1894-95, p. 572 : Haswell, Cat. Austral. 

 Crust, p. 92. 



Gelasimus nitidus, Dana, U. S. Expl. Exp. Crust, pt. I. p. 316, pi. xix. figs. 5a-d : 

 Milne Edwards, Ann. Sci. Nat., Zool., (3) XVIII. 1852, p. 147 : Thallwitz, Abh. 

 Mas. Dresden, 1890-91, p. 42. 



Gelasimus cultrimmuis, Kingsley, Proc. Ac. Nat. Sci. Philad. 1880, p. 140, pi. ix. 

 fig. 7: Ortmann, Zool. Jahrb., Syst., VII. 1893-94, pp. 750-753, and Jena. Denk. 

 VIII. 1894, p. 56. 



Uca cultrimana, Ortmann, Zool. Jahrb., Syst. X. 1897-98, p. 348. 



Differs from G. Marionis only in the form of the large hand of the 

 adult male : this member, in var. nitidus, 



(1) is not much over 2 J times the length of the carapace, its 

 dactyl us being but little more than twice the length of the upper border 

 of the palm : 



(2) it has the two oblique granular ridges on the inner surface of 

 the palm remarkably salient : 



(3) it has the dentary edge of the immobile finger thrown into a 

 characteristic W-shaped curve owing to the strong projection of two 

 large triangular lobes, and 



(4) ifc has the dactylus somewhat hooked at tip. 



In the Indian Museum are 103 specimens, chiefly from the Anda- 

 mans and Nicobais, but also from the Coromandel and Malabar coasts. 

 The length of the carapace in large specimens is 14 millim., the breadth 

 21 millim. 



55. Gelasimus acutus, Stimpson, de Man. 



Gelasimus acutus, Stimpson, Proc. Ac. Nat. Sci. Philad. 1858, p. 99 : Tozzetti, 

 Magenta Crust, p. 107 : Kingsley, Proc. Ac. Nat. Sci. Philad. 1880, p. 144 : de Man, 

 Journ. Linn. Soc, Zool. XXII. 1887-88, p. 113, pi. vii. figs. 8-9, pi. viii. figs. 1-4, 

 and Notes Leyden Mus. XIII. 1891, p. 21, and in Weber's Zool. Ergebn. Niederl. 

 Ost-Ind. II. 1892, p. 306, and Zool. Jahrb. Syst. VIII. 1894-95, p. 573: Ortmann, 

 Zool. Jahrb., Syst. 1893-94, p. 750. 



Uca acuta, Doflein, SB. Alt. Munch. XXIX. 1899, p. 193. 



Length of the carapace about three-fifths the greatest breadth, 

 which is at the acute wing-like an tero- lateral angles. 



