AMPHIPODA. CHILTON. 



The first gnathopod (Fig. 7 d) is very small, long, slender 

 ami delicate, and ends without dactyl in a small tuft of 

 setae as in C. pusilla (Grube). 



The second gnathopoda (Fig. 7 e) are large and power- 

 ful, the right and left equal in sixe. The basal and ischial 

 joints are produced into a flange on the inner side against 

 which the large propod rests when renexed. The carpus is 

 short and subtri angular and bears on the posterior margin 

 several transverse rows of long setules, a similar row extend- 

 ing along the distal margin on the inner side. The propod 

 is greatly dilated, being fully two-thirds as broad as long; 

 it bears numerous transverse rows of setae near the anterior 

 margin, others along the posterior margin and numerous 

 single setae scattered at various places on the inner sur- 

 face; the palm is denned by a stout subacute tooth, is broad, 

 and shows two or more rounded prominences; the finger is 

 short, stout, strongly curved, and fits into a depression near 

 the defining tooth. 



The peraeopoda call for no special remark, the third, 

 fourth and fifth have the basal joint only slightly dilated. 

 (S<-e Figs. 7 /' and Q.) 



. 



Fig, 7 / /(. Colomastix In'azieri, Haswell, male. 



/. First peraeopod. g. Fifth peraeopod. 



h. Pleon. with uropoda and telson. 



