Carcinologieal Fauna of India. 257 



The broad front is coarsely bilobed : there is a strong tooth at the 

 outer angle of the orbit against which the retracted eye impinges, and 

 another at the outer angle of the buccal cavern, on either side — only 

 visible on the denuded carapace. 



Except that they are densely tomentose up to the base of the 

 fingers, and that the fingers are even more slender, the chelipeds are 

 a repetition of those of My r odes. 



In the Indian Museum are numerous specimens, from the Anda- 

 mans, the Mekrau Coast, and from the Bay of Bengal up to 65 fms. 



Pariphiailus, n. gen. 



Closely allied to Iphiculus, but differing in several important char- 

 acters and in the whole form of the carapace. The appendages are 

 as densely tomentose as in Iphiculus, but the carapace is covered with 

 a finer and sparser tomentum which does not quite conceal the texture 

 of the surface. 



The carapace is circular and globular, with its margins coarsely 

 spinate, and its surface vesiculous : the intestinal region is very dis- 

 tinctly isolated, but the other regions are almost lost in the genei-al 

 convexity of the carapace. 



The front is narrow : in one species it projects as a distinct snout, 

 in the other the angle of the afferent branchial canal can be seen 

 beyond it in a dorsal view, but the whole mouth can never be seen 

 beyond it as it can in Iphiculus. 



The orbits are obliquely elongate and completely conceal the eyes : 

 two distinct fissures are plainly visible in the emarginate roof besides 

 a fissure in the lower part, and there is a gap at the inner canthus 

 where the basal joint of the antenna — the flagellum of which is large — 

 stands. The antennules fold very obliquely. There is a space of 

 varying width between the edge of the orbit and the edge of the 

 buccal cavern. 



The buccal cavern is rather elongate triangular, and the merus 

 of the external maxillipeds is half the length of the ischium measured 

 along the inner border. 



The chelipeds are from 1| to If times the length of the carapace : 

 the hand is short, cylindrical with the base inflated, or is subglobular, 

 but not nearly so swollen as in Iphiculus or Myrodes : the fingers are 

 slender, much longer than the hand and somewhat hooked ; they open 

 in an obliquely vertical plane, and the tip of the mobile finger moves 

 through the usual arc of about 75°. The legs are moderately stout. 

 The abdomen of the male has the 3rd, 4th and 5th segments fused : 

 that of the female has all the segments distinct. 



262 



