240 



fingers straight, but in some males the fixed finger is excavated and slightly bent 

 at base for the reception of one or two enlarged teeth of the dactylns. 



The fully extended body is only 15 millim. long. 



Arabian Sea, off the Travancore coast, 430 and 459 fathoms. 



„ , -vt 1937-1939 2315-2329 /m rn • \ 1373-1377 



Regd.Nos. — t- — : — ^ — (Types of the species) : 



15. Munida microps, Alcock. 



Munida microps, Alcock, Ann. Map;- Nat. Hist., April 1894, p. 326. 



I I.I .1 STRATIONS OF THE ZOOLOGY OF THE INVESTIGATOR, CRDSTACEA, PLATE XIII. PlG. 5. 



Very closely related to M. microphthalma, A. M.-Bdw. 



The breadth of the carapace is barely three-fourths of the length (without 

 the rostrum). The rostrum, which is strongly upcurved and is indistinctly 

 serrated at tip, is considerably 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 carination 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 seta?. The tumid gastric area bears in 

 front a convex row of spines, only two of which, namely, those which stand im- 

 mediately 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 G to 8 spines on its front edge. 



The eyes are small, cinnamon-coloured, hardly compressed and little dilated, 

 their major diameter being about one-eighth the length of the carapace. 



The spines of the basal joint of the antennular peduncle are long and 

 needle-like. 



The antennal 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 the inner edge 

 of the merus near the proximal end bears a very prominent spine. 



