154 PROCEEDINGS OF THE ACADEMY OF . [1880. 



This species is closely allied to tangieri^ but differs in the pro- 

 portionately smaller cheliped without tubercular ridges on the 

 inner surface and in the more sparse tuberculation of the carapax. 



* * Male Abdomen five-jointed, 



37. Gelasimus stenodactylus Edw. et Lucas. PI. x, f. 33-35. 



GJagimus gtenodactylus Edw. and Lucas, in D'Orbigny's Voyage 

 Crust, p. 26, PI. XI, f. 2 (1843) ; Nicollet in Gay's Hist, of Chili, 

 Zoologie iii, p. 105 (1849); Edw. Ann. Sci. Nat. Ill, xviii, 149 

 (1852). Gelasimus gibbosus Smith, Trans. Conn. Acad., II, p. 141, 

 PI. II, f. 11, PL IV, f. 8 (1870), Lockington, 1. c. Gelasimus lepto- 

 dactylus et poeyi Giieriu MS. 



Carapax smooth, transversely flat, the regions sti'6ngly gibbous. 

 Meros and carpus of larger cheliped elongate, meros smooth, its 

 angles rounded, carpus externally unconspicuously granulate, its 

 inner margin acute denticulate. Hand externally smooth or 

 granulate, a tubercular ridge on the inside of the palm, running 

 obliquely from the lower margin to the groove in which the carpus 

 folds. Fingers much longer than the palm, internally denticulate. 



Mexico ! Cuba! Brazil ! Guerin's Collection (Phila. Acad.) ; Gulf 

 of Fonseca! McNiel (Peab. Acad.) ; Gulf of California I W. N. 

 Lockington (Brown University) ; Valparaiso (Edw. and Luc). 



Of the following species I can say but little. I have not seen 

 specimens which would answer to the descriptions and figui'es, 

 while the descriptions are so meagre that I cannot decide regard- 

 ing their affinities. 



38. Gelasimus variegatus Heller, Verhandlung der Zool. Bot. Gesellschaft, Wien, 



1862, p. 521. 



" G. annulari affinis sed brachium chelipedum ad raarginem super- 

 iorem carinatum et dentatum, index dactylo paulo brevior acumin- 

 atus. Madras.''^ 



This is described as one of the specimens collected b}' the 

 Novara in her voyage around the world, but in Dr. Heller's final 

 memoir on the Crustacea of that expedition, this species is not 

 mentioned. 



39. Gelasimus variatus Hess, Archiv. fiir Naturgeschiclite, XXXT, 146, PI. VI, f. 7 



(1865). PI X, f. 32. 



Cephalothorax smooth, greatly swollen. Front between the 

 eyes small. Greater cheliped of male somewhat longer than the 

 breadth of the carapax. There is a large triangular depression at 



