20 Major A. Alcock and dipt. A. R. S. Anderson on 



the extended body without the telson and longer than the 

 le^s Ly their fingcr-len;:;th ; their dorsal surfaces are covered 

 with squamiforni markings, the only spine is a small one 

 near the distal end of the inner border of the wrist ; the 

 fingers are as long as the palm. 



The first tliree pairs of legs liave the dorsal surfaces of the 

 meropodites and next two joints covered with squamiform 

 markings ; the dactyli are about half the length of their 

 propodites. 



'I'wo specimens — the largest a female 2-3 millim. long — 

 from off the Travancore coast, 430 fathoms. 



'J'iie oggs are of enormous size, being nearly 2 millim. in 

 major diameter after contraction in spirit. 



The difference between Munidopsis IJemingi ixnd. M. ornata, 

 Faxon, is very slight; in the latter species the edges of the 

 rostrum are serrate and the chclipcds and legs are armed 

 with some spines. 



Munidopsis tridis, sp. n. 



Extremely closely related to 31. margarita^ Faxon. 



Carapace subquadriUiteral, convex, its regions well de- 

 limited and tumid, its surface armed with numerous acute 

 subsquamiform tubercles and .symmetrically disposed spines, 

 of which a pair on tlie anterior ])art of the gastric region and 

 one in the middle of the cardiac region are slightly enlarged. 



Kostrum phort, simple, triangular, carinate, its edges indis- 

 tinctly serrulate in their distal half; anterior border of cara- 

 pace armed with an acute spine at the outer angle of the 

 orbital notch ; lateral borders armed with four acute spines, 

 posterior border with several spines ; a row of spinules above 

 the postero-lateral border. 



Second, third, and fourth abdominal terga transversely 

 bicarinate, the first four or five carina: bearing symmetrically 

 disposed spines ; the corresponding pleurge are unicarinate, 

 the anterior of them (second) having a single upstanding 

 spine. 



Eyes almost immovable ; an inconspicuous spinule at their 

 inner angle. 



Three spines, two of which are large, on the inner border 

 of the mcrus of the external maxillipeds. 



Chelipeds markedly unequal in the male, very rarely 

 slightly unequal in the female ; in both sexes the dorsal 

 surfaces of the arm and wrist are spiny, a few of the spines 

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

 the palm is spinulous. 



In the adult male both chelipeds are vastly stouter than 



