152 Carcinological Fauna of India. 



The chelipeds are as in Calappa and Mursia : the meropodite, or 

 " arm " has the same transverse ridge or crest near its distal end, ex- 

 ternally ; the palm is strongly compressed, with its upper border raised 

 into a sharp serrated crest; and the chelipeds as a whole are sym- 

 metrical, except that on one hand the fingers have each, at the base, on 

 their outer surface, a coarse tooth or lobule. 



The leo-s are compressed and are of moderate size : none of them 

 approach the chelipeds in length. 



The abdomen in both sexes is much as in Calappa : in the male the 

 3rd, 4th and 5th terga are intimately fused together, and with almost 

 complete obliteration of sutures ; in the female all seven segments are 

 perfectly distinct. In the majority of species the second abdominal 

 tergum, in both sexes, is strongly carinate transversely, as in Mursia. 



11. Cryptosoma granulosum, (De Haan). 



Cycloes granulosa, De Haan, Faun. Japon. Crnsfc. p. 71, pi. xix. fig. 3. 

 Cryptosoma granulosum, Miers, ' Challenger ' Brachynra, p. 293 : Alcock and 

 Anderson, J. A. S. B., Vol. LXIII. 1894, pt. 2, pp. 198 and 203. 



Carapace conspicuously longer than broad, its surface, like the 

 exposed surfaces of the chelipeds, finely and very closely granular : in 

 its anterior half there are also some small tubercles, most of which fall 

 into seven nearly longitudinal rows, one row being in the middle line. 

 The antero-lateral borders are very finely crenulate, and end at a tiny 

 lateral-epibranchial denticle. The convergent postero-lateral borders, 

 and the posterior border, are very finely and closely beaded. The outer 

 parts of the pterygostomian and subhepatic regions are covered with a 

 felt of fine short hairs. 



The front is bidentate and projects beyond the level of the orbits : 

 the latter occupy all the rest of the anterior border. 



The antennary flagella are very short. 



The transverse ridge at the distal end of the arm is granular, and 

 is armed with three spines gradually increasing in size from within out- 

 wards : the upper surface of the wrist has several small tubercles : the 

 outer surface of the hand has, at its base, an oblique crest, which ends 

 acutely and is continued obliquely upwards as a line of small tubercles ; 

 a second line of tubercles runs parallel with this, obliquely across the 

 middle of the hand : the crest of the hand is 8-dentate. 



The last pair of legs has its four terminal joints distinctly lamellar. 



The carina of the second abdominal tergum is in both sexes trilob- 

 ed, the middle lobe being much smaller than the lateral lobes. 



Andamans, depth not recorded : Maldives, 20-30 fms. 



157 



