37,4 A. Alcock — Curcinological Fauna. of India. [No. 3-, 



The; epistonie would be linear; were it not for a septum-like fold or 

 lobe that projects strongly between the meropodites of the external 

 maxillipeds : owing to this fold the anterior edge of the buccal cavern. 

 ha;s a bilobed appearance. .The external maxillipeds completely close 

 the buccal cavern : their merus is at least as long as and deeidedlyv 

 broader than their ischium : the flagellum, which is slender, is articula- 

 ted near, but not at, the antero- external angle .of the merus : the 

 exognath is not much concealed, though not completely exposed. 



Oil The'chelipeds in the adult male are unknown : in the young male 

 they are equal and are shorter and slenderer than the legs, except 

 perhaps the very small 4th pair. 



i The legs have somewhat the same relations as in Macrophthahnus — 

 ix.y the first and last pairs-are much the shorter and the two middle 

 pairs are much the longer and stouier. 



The abdomen in the female is unknown: in the male it is narrow, 

 aiid consists of 5 separate joints, the 3rd 4th and 5th segments being ' 

 fused, but without obliteration of sutures. 



.; It seems to me of very doubtful utility to separate this form from 

 Paraclistostoma, de Man, or either of them from Clistostoma, De Haan 

 (as restricted by de Man). ■ . • - 



68. Tylodiplaxindica,n.sp. 



'-'' Two yoang males from Karachi are in the Indian Musenm : their chelipeds are 

 still of the female Macrophthahnus type, so that it is impossible to give a complete 

 •diagnosis of the species. 



Carapace more or less hairy, finely punctate, its length less than 

 two-thirds its greatest breadth Which, owing to the strong divergence, 

 from before backwards, of the lateral borders, is posterior ; its antero- 

 lateral angle is an obtuse angle. The gastric region is defined by a 

 perfectly circular line. 



Front square-cut, laminar, but not projecting beyond the inner 

 angles of the Orbits r from which it is separated by a groove : the front 

 is concave in the middle line. 



The pigment of the eyes is small in amount, and is placed some 

 distance behind the end of the eyestalks. 



The merus of the external maxillipeds is longer and much broader 

 than the ischium, and has its antero-external angle considerably dilated, 

 and its surface somewhat granular. 



The chelipeds of the immature male, and the legs, are hairy, much 

 as in Uncrophthahnus depressus, the hairs on the posterior border of 

 the merus of the 2nd pair of legs and on the dorsal surface of carpus 

 and propodite of the 2nd and 3rd pair of legs being particularly 



