326 Surg.-Capt. A. Alcock on 



serrate on the posterior edge, and the dactylus crenate on the 

 front edge. 



An ovigerous female from tlie Andaman Sea, 112 fath. : 

 length 29 millim. from tip of rostrum to end of telson. 



78. Munida mtcrops^ sp. n. 



Very closely related to M. inicrophtTialma^ A. M.-Ed\v. 



The breadth of the earapaee is barely three fourths of the 

 length (without the rostrum). The rostrum, which is 

 strongly npcurved and is indistinctly serrated at tip, is con- 

 siderably more than half the length of the carapace and 

 considerably more than double the length of the divergent 

 supraorbital spines ; it extends backwards as a faint carina- 

 tion of the anterior third of the gastric region. The frontal 

 border on either side of the rostrum is convex and slightly 

 oblique ; the posterior border is raised but unarmed ; the 

 lateral margins are armed with 7 (2 + 3 + 2) spines. The 

 transverse ridges are strongly developed, smooth, and thickly 

 fringed with short sette. The tumid gastric area bears in 

 front a convex row of spines, only two of which, namely 

 those which stand immediately behind the supraorbital spines, 

 are conspicuous, the outermost spine on each side being placed 

 far back on a level with the centre of the hepatic region. 

 The cardiac area is well defined and is bounded on each side 

 by a spine standing immediately behind the bifurcation of 

 the cervical groove. A spinule or two are found within the 

 area enclosed by the bifurcation of the cervical groove. 



Abdominal terga each with one or two smooth setose 

 ridges ; the second tergum only is armed, having 6 to 8 

 spines on its front edge. 



The eyes are small, with the cinnamon-coloured corneal 

 region hardly compressed and little dilated, its major diameter 

 being about one eighth the length of the carapace. 



The spines of the basal joint of the antennulary peduncle 

 are long and needle-like. 



The anteunal peduncles are smooth ; the basal joint has 

 its internal angle produced into a stout spine, which, however, 

 is not visible from above, and the second joint has both its 

 anterior angles produced into long acicles ; the flagellum is of 

 great length. 



The external maxillipeds are slender, almost smooth, and 

 but slightly hairy ; the inner edge of the ischium is sharply 

 toothed throughout and tlic inner edge of the merus near the 

 proximal end bciU's a very prouiincnt spine. 



The thoracic legs are slender, smooth or very faintly 



