Carcinological Fauna of India. 17 1 



palm slightly compressed, not dilated, armed with spinules on its upper 

 aad lower margins, fingers about as long as palm, and slightly incurved 

 at the apices which are nearly destitute of hair ; the ambulatory legs 

 are very slender and elongated; the dactyli of the first three pairs are 

 short and nearly straight, in the last pair only are they slightly falciform. 

 Colour (in spirit) light yellowish-brown." (Miers). 



A single specimen is included in the Museum collection: the locali- 

 ty is not quite certain, bat it came most probably from the Andamans. 



Achasus cadelli, n. sp. Plate V. fig. 1, 



In general form and proportions much resembling Achasus lorina 

 (Ad. & White), from which, it differs in having the legs even more 

 slender, and the eye-stalks quite smooth. 



The regions of the pyriform carapace are well demarcated, the 

 hepatic regions being each produced to form a strong sharp tooth. 

 There are three elevations, arranged in triangle, on the gastric region, 

 and two, side by side, on the cardiac region. 



The rostrum has the usual Achasus -f.ovm, but each lobe is dorsally 

 carinate, the carina being spinate or serrate. 



Behind the rostrum is a long constricted " neck," more pronounced 

 even than that of A. tenuicollis and brevirostris. 



The chelipeds are of the usual form. The legs are extremely long 

 and slender, those of the second trunk segment being about five times 

 the length of the carapace, rostrum included. The dactyli of the 4th 

 and 5th pairs are hardly falciform. Length of carapace, 7 millim : 

 greatest breadth of carapace, 4 millim. : length of 2nd pair of trunk-legs, 

 36*5 millim. 



Loc. Andamans. 



Achasus spinostis, Miers. 



Achasus spinosus, Miers, Japanese and Corean Crustacea, in Proc. Zool. Soc, 

 1879, p. 25. 



Carapace triangular, narrowed behind the eyes, and armed with 

 six spines above, namely: one on the gastric, one — bilobed — on the 

 cardiac, and two on each branchial region : there are also some spines 

 or sharp tubercles on the ventrad aspect of the hepatic and branchial 

 regions. The rostrum is small and bilobed. The eye-stalks are robust, 

 and have a strong tubercle near the middle of the anterior surface. 

 Chelipeds in the male robust, the arm and wrist granular above, the 

 palm swollen, with about six spinules on the upper margin and a few 

 granules on the lower margin near its base : fingers, in the male, acute 

 17 



