64} A. Alcock — Carcinological Fauna of India. [No. 1, 



de Man, Notes Leyden Mas. I. 1879, p. 60, V. 1883, p. 151, and XV. 1893, p. 286: 

 Lenz and Richtera, Abh. Seuck. Nat. Gea, Frankfurt, XII. 1881, p. 422 ; Cano, Boll. 

 Soc. Nat. Napol. III. 1889, p. 220 : J. R. Henderson, Trans, Linn. Soc. Zool. (2) V. 

 1893, p. 375. 



.'' Goniosoma duhium, Hoffmann in Pollen and Van Dam, Rech. Faun. Madagasc, 

 V. 2, 1874, p. 11, pi. ii. figs. 6-8. 



Carapace about two-thirds as long as broad, crossed transversely 

 by salient granular lines which have the same disposition as in G. varie- 

 gata De Haan, except that there is only one on either branchial region 

 behind the level of the last spine of the antero -lateral borders. 



Front cut into 6 truncated teeth, not including the inner supra- 

 orbital angles. 



Antero-lateral borders very little oblique, cut into six teeth 

 (including the outer orbital angles) of which the second is rudimentary, 

 and looks like a denticle cut out of the base of the first, while the last is 

 not enlarged in adults, though in the young it may be. 



The posterior border of the dorsal surface of the carapace though, 

 straight forms a curve with the postero-lateral borders. 



Orbit without any particular dorsal inclination, its major diameter 

 a little more than a third the width of the inter-orbital space, the inner 

 angle of the lower border broadly dentiform, the lobule at the outer 

 end of this border distinct but not dentiform. 



Arm with 3 spines on the anterior border and none on posterior 

 border : wrist with a strong spine at the inner angle and 2 or 3 

 spinules on the outer : hand not tumid, 5 spines, of which 4 are large, 

 on the upper surface. 



In the fifth pair of legs the merus is nearly twice as long as broad^ 

 and has the usual spine on the posterior border ; the same border of 

 the propodite is serrated. 



In the Indian Museum are five specimens, from the Pedro Shoal^ 

 from the Madras coast of the Gulf of Mauar, and from off the Arakan- 

 coast. 



This species is distinguished from G. anisodon, which, though not 

 known to occur in Indian Seas, is found at Singapore, by the presence 

 of granular ridges on the carapace, by the five spines (instead of 2) on 

 the hand, and by the serrated (instead of smooth) posterior border o£ 

 the propodite of the last pair of legs. It is one of the conspicuous 

 links between Goniosoma and Thalamita. 



40. Gharyhdis (Goniohellenus) ornata, A. M. Ed'w. 



Thalamita truncata, De Haan, Faun. Japon. Crust, p. 43, pi. ii. fig, 3 and pi. xii. 

 fig. 3 only <f . 



Charyhdis truncata, Stirapson, Proc. Ac. Nafc. Sci. Philad. 1858, p. 39. 



