HO PROCEEDINGS OF THE ACADEMY OP [1880. 



margins denticulate, the upper one produced distally into a crest, 

 carpus granulate above. Hand externally granulate on the basal 

 portion, the upper and lower margins denticulate ; the inner sur- 

 face of the palm has an oblique line of tubercles running obliquely 

 upward and backward from the lower margin at the base of the 

 thumb to near the articulation with the carpus. Fingers short, 

 compressed, the thumb with the lower margin regularly arcuate ; 

 the upper margin of dactylus nearly straight as are the occludent 

 margins of each. 



Gulf of Fonseca ! McNiel (Peab. Acad., Smith's types). 



7. Gelasimus cultrimanus White. PI. ix, f. 7. 



Gekmmus vocans Edw., Annales des Sci. Xat., Ill, xviii, p. 145, PI. 

 Ill, f. 4 (1852) ; Stimpson, Proc. Phila. Acad., 1858, p. 99 (1858) ; 

 Heller, Reise der Novara, Crustacea, p. 37 (1865) ; Hilgendorf, iu 

 van der Decken's Reise, p. 83 (1867) ; Alplionse Milne-Edwards, 

 Nouv. Arch, du Mus. d'Hist. Nat., ix, p. 273 (1873). Gelasimus 

 cultrimanus White, Catalogue Brit. Mus. Crust., p. 35, sine descr. 

 (1847) ; Voyage of the Samarang, Crust., p. 49 (1848). Gelasimus 

 nitidus Dana, U. S. Expl. Exped. Crust, p. 316, PI. X, f. 5 (1852). 



Carapax smooth, arcuate. Meros of larger cheliped witli an 

 oblique ridge on the upi^er posterior surface which gradually dis- 

 appears before the articulation with the carpus ; the inner margin 

 somewhat cristate, distally with a prominent tooth and sometimes 

 traces of a second ; carpus externally granulate, a portion near 

 the articulation with the meros smooth, inner surface with a strong 

 spiniform tubercle. Palmar portion of hand swollen and exter- 

 nally granulate, gi'anules larger below. On the inner surface there 

 is an oblique tubercvxlar crest near the lower margin but not ex- 

 tending to it, and a second near the occludent margin. Thumb 

 with an impressed line on the outer surfoce, the lower margin 

 granulous, the occludent margin broadly excavate ; this excava- 

 tion is sometimes regularl}' curved, but generally shows traces of 

 a division into two sinuses ; the distal fourth bends abruptly 

 downward to meet the inferior margin. Finger granulate above 

 near the base, occludent margin nearly straight, 



Philippines? Dr. T. B. Wilson (Phila. Acad.) ; Moreton Bay, Aus- 

 tralia! E, Wilson (Phila. Acad.); Coast of Malabar ! Guerin's 

 Collection (Phila. Acad.). This specimen (labelled " G. crassi- 

 manus Coll. Mus.") has the excavation of the thumb of the larger 

 cheliped plainly divided into two pai-ts. Java, Malabar (Edw.) ; 

 Nicobars (Heller) ; Zanzibar (Hilgendorf) ; New Caledonia (A. 

 M.-Edw.). 



