356 Carcwological Fauna of hid'ia. 



de Man, Notes Leyden Mas. XIII. 1891, pp. 21, 44, ph iv. fig. 12: Ortmann, ZodU- 

 Jahrb,, Syst., VII. 1893-94, p. 751, and Jena. Denk. VIII. 1894, p. 59. 



GeZasmws c/iforoy/if^aZwus, Hilgendorf (?icc Edw.), M 13. Ak. Berl. 1878, p. 803. 



{ajpud de Man). 



Gelasimus Smithii, Kingsley, Proc, Ac. Kat. Sci, Philad. 1880, p. 144, pi. 9, fig. 14 

 (apud Ortmaim). 



Vca inversa, Ortmanii, Zool. Jahrb., Syst., X. 1897-98, p. 351. 



There are in the Indian Musenm specimens of this species from 

 "Madagascar and the Red Sea, and some from Karachi which differ 

 from the type in the form of the dacfcylus of the large male cheliped, 

 and are here separated as a variety.] 



50. Gelasinuis mvarsus, var. sindennis, no v. 



This vaiiety differs from typical G. {nveisus from Madagascar only 

 in havin<y the tip of the dactylus of the large male cheliped simple 

 (instead of furnished with a second tooth that gives it a notclied 

 appearance) and the palm of the hand smoother externally. 



The species I'esembles G. annulipes, from which it differs in the 

 following characters : — 



(1) the lateral borders of tlie dorsum of the carapace are defined 

 by a tine line which is raised and distinct in the anterior third only, 

 and is a little more oblique : 



(2) the lower border of the orbit is much more sinuous, and is 

 either entire or is quite imperceptibly denticulated at its outer angle : 



(3) ill the large cheliped of the male the arm is trigonal witii 

 sharp edges, <he upper edge rising into a distinct lobe or crest and the 

 distal end of the inner edge forming a crest or blunt tooth ; the inner 

 edge of the wrist is distinctly denticulated, and the upper border of the 

 palm has several longitudinal rows of granules ; of the granular ridges 

 on the inner surface of the palm the lower one that in G. annulipes runs 

 to the lower edge oj the immobile finger is ahsent or, at most, is represented 

 hy a smooth and slight siuelling ; finally the immobile fingei', though as in 

 G. annulipes nearly straight and shorter than the dactylus, has a simple 

 not a notch-like tip. 



In the Indian Museum are 30 specimens from Karachi. The cara- 

 pace of the largest specimen is 10 millim. long and 18 millim. broad. 



51. Gelasimus triangularis, A. M. Edw. 

 Gelasimus triangularis, A. Milne Edwards, Nouv. Archiv. du Mus. IX. 1873, 

 p. 275 : Kingsley, Proc. Ac. Nat. Sci. Philad. 1880, p. 150 : de Man, Jourii. Linn. 

 Sec, Zool., XXII. 1887-88, p. 119, pi. viii. figs. 8-11, and Notes Leydeu Mus. XIII. 

 1891, p. 22, and in Weber's Zool. Ergebn. Niederl. Osfc. Ind. II. 1892, p. 307 : and 

 Zool. Jabrb., Syst., VIII. 1894-95, p. 577 : J- R. Henderson, Trans. Linn. Soc, Zool., 

 (2) V. 1S93, p. 388. 



698 



