228 G. M. Giles — Six 7iew AmjjM^pods from the Bay of Bengal. [No. 2, 



The liead is ^V^hs of the total length, irregularly quadrate and 

 smooth ; it is produced anteriorly into a small blunt rostrum, and the 

 small eye, which is pigmented red brown and consists of numerous 

 ocelli, is placed opposite to the root of the antennules. 



The thorax and abdomen are of equal length and of nearly the 

 same depth and breadth throughout. In the thorax, the segments in- 

 crease regularly in length from before backwards, while the first two of 

 the abdomen are subequal to the hinder thoracic segments and the third 

 is much longer than any other segment, the last three decreasing rapidly 

 in length. 



The antennules are rather more than half as long as the body ; the 

 peduncle forms the larger half of their length and consists of three 

 stout joints, the distal two of which are fringed on their lower surface 

 by a number of very long flexible hairs, the proximal joint is beset 

 with extremely fine short hairs only, the secondary appendage is 

 small and consists of four short joints well provided with short stiff 

 hairs, and the flagellum consists of about eleven short articulations 

 liberally fringed below with short fine hairs. 



The antenncB are somewhat shorter, slightly less than half the body 

 length J their peduncle consists of five joints, of which the first two are 

 extremely short, the second being armed with a strong downwardly 

 produced spine, the third joint is longer and stouter than either of those 

 of the antennules and the fourth and fifth subequal in length and consider- 

 ably longer ; as in the antennules, the two distal joints are liberally 

 fringed below with long flexible hairs ; the flagellum is short, barely 

 equalling the last joint of the peduncle in length ; it consists of seven 

 short joints all well provided with hairs, the last joint carrying, in 

 addition, a pair of peculiar stout bifid hairs. 



The gnathites could not be examined, with the exception of the 

 maxillipedes, which are remarkably long and pediform. 



All the thoracic appendages are remarkably hirsute, being covered, 

 in addition to the large stout hairs, shewn in the figure, with a perfect 

 coat of fine hairs visible only under considerable amplification. The 

 second and third are very weakly subchelate, the propodites being merely 

 dilated and not produced into an opposible member. The first is much 

 smaller and slenderer than the second, but both are on the same general 

 plan, the dactylopodites being barely serrated and the propodites armed 

 only with one or two stout spines. The fourth and fifth are subequal, 

 the fourth slightly the longer and stouter; they slightly exceed the 

 second in length and are of the usual ambulatory type. The sixth, 

 seventh, and eighth thoracic appendages agree in having their basipo- 

 dites very large and strengthened by large anterior and posterior buttress- 



