304 DE. W. T. CALMAN OX NEW OE EAEE 



The antennule has the third segment of the peduncle slightly longer than the 

 second ; the outer flagellum has three segments, the terminal one minute. 



The third maxilliped lias a well-developed exopod. 



The first legs have the basis about one-third as long as the distal segments together, 

 without teeth on the proximal segments. The last three pairs of legs are very long 

 and slender. In the last pair the basis is little more than two-fifths as lon£r as the 

 distal segments together, the carpus is nearly four times as long as the merus and 

 one-third longer than the propodus ; the slender curved dactylus, with its claw, is 

 about two-thirds as long as the propodus. 



The peduncle of the uropods is not more than half as long as the last somite, 

 without distinct teeth on the inner edge. The endopod is more than three times as 

 long as the peduncle, serrated with very transparent teeth on its inner edge, and with 

 a slender terminal spine. The exopod is about half as long as the endopod. 



Bemarks. — The incrustation of mud which commonly covers the body and limbs in 

 species of this genus rendered the examination of this very minute form tedious and 

 difficult. In removing the mud it is possible that some spines on the surface of the 

 carapace may have been detached and overlooked, and it is probable that the number 

 of hairs on the body and limbs was greatly diminished. 



Occurrence. — Gulf of Siam, " Koh Chang, about 1 fathom, coral," " Koh Kahdat, 

 1 fathom, coral." Th. Mortensen Coll., Copenhagen Museum. Co-types in British 

 Museum. 



Camptlaspis platttjropus, sp, n. (Plate XXXIV. figs. 25-29.) 



Description of immature Female (with developing brood-pouch). — Total length 

 1'8 mm. 



The carapace is a little more than one-half of the total length and its dorsal surface 

 is strongly arched. On each side is an oblique dorso-lateral ridge which curves 

 towards the middle line on the posterior part of the dorsal surface. The pseudo- 

 rostrum is short and truncated and the antennal notch is obsolete. The ocular lobe 

 is very small and the eye is not distinct. 



The abdominal somites are stout and are slightly depressed. 



The mouth-jjarts have the structure usual in the genus. 



The third maxillipeds have a well-developed exopod ; the basis is shorter than the 

 distal segments together ; the merus is greatly expanded, less than twice as long as 

 broad, and longer than the last three segments together. 



The first legs have the basis about as long as the distal segments together ; the 

 ischium is produced internally into a large but thin and transparent triangular tooth. 



The second legs have the terminal segment rather stout and shorter than the two 

 preceding together. 



The uropods are remarkably broad and flattened. The peduncle is less than twice 



