256 



few of the spines along the inner edge being enlarged, and the inner edge of 

 the palm is spinulons. 



In the adult male both chelipeds are vastly stouter than the legs : the 

 larger is about half as long again as the fully extended body and from a dactylus 

 to half a dactylus longer than its fellow, and has the hand enlarged and the 

 immovable finger so arched that the fingers meet only at tip ; the smaller 

 cheliped is very variable, sometimes it is hardly different from its fellow, but 

 usually it is more slender, especially in respect of the hand, and usually the 

 fingers meet throughout the greater part of their extent. 



In the female the chelipeds are stouter, but not vastly stouter, than the 

 legs, and are about as long as the fully extended body, and the fingers are nearly 

 straight. 



The legs are about as long as the body in its natural pose (with the abdo- 

 men bent) and are scabrous ; the anterior border of the merus and carpus is 

 spiny, the dactylus is nearly half the length of its propodite and has its posterior 

 border almost imperceptibly serrulate. 



The sternum and neighbouring joints of the legs are beautifully iridescent, 

 as also sometimes is the dorsal surface of the bent-up portion of the abdomen. 



Fifty-two specimens from off the Travancore coast, 430 fathoms. 



An adult male has the body 26' 5 millim. in extreme length and the larger 

 cheliped 38 millim. long. An egg-laden female is 21 millim. long and its 

 chelipeds measure the same. 



-n j AT 1926-1928 1940 2177-2181 2183-2201 ,m ,. ,- 



Kegd. Nos. jTj : -^-: ^ : - ^ (iypes ot the species). 



25. Mitnidoiisis stylirostris, Wood-Mason. 



Munidopsis stylirostris, Wood-Mason, Ann. Mag. Nat. Hist., Feb. 1891, p. 201: Alcock, Ann. Mag. Nat. Hist., 

 April 1894, p. 328. 



ILLUSTRATIONS OF THE ZOOLOGY OF THE INVESTIGATOR, CRUSTACEA, PLATK XIII. FIG. <>. 



The general surface of the body is finely pubescent dorsally. There are no 

 epipodites on any of the thoracic legs. 



The greatest breadth of the carapace is about three-fourths of the greatest 

 length (without the rostrum). The rostrum, which is styliform and strongly 

 upcurved, is nearly two-thirds of the carapace in length ; the front margin of 

 the carapace is slightly oblique, and is unarmed except for a strong oblique spine 

 at the antero-lateral angle, and the lateral margins, which are parallel through- 

 out or even a little divergent anteriorly, are, except for the antero-lateral spine, 

 either unarmed or only slightly rugose anteriorly ; the posterior margin is raised, 

 but is quite smooth ; the tumid gastric region is marked by the presence of 

 rugosities which anteriorly culminate in a pair of coarse spinelets or tubercles, 

 one on each side of the middle line. 



