AMPHIPODA — STEBBING. 611 



side-pl«ites very small. Head slightly produced in front, ocular 

 lobes more so, angular or cuspidate. Upper and lower antenn«; 

 subequal, the latter stronger ; appendage well-developed. Man- 

 dibles with the palp long, second and tliird joints subequal, the 

 Avhole as in Gammaropsis [Eurystheusl. 



" Second gnathopods of moderate size in the female, but 

 immensely developed and peculiarly formed in the male; urus 

 [pleon from 4th segment] small ; the third uiopods with the outer 

 ramus very short, without a terminal joint, and the inner rudi- 

 mentary. 



"This genus is nearly allied to Microprotopus, from which it 

 differs chiefly in the smallness of the side-plates." 



The only trustworthy distinction between Microprotopus, Nor- 

 man, and the present genus seems to depend on the last-named 

 character, since the excessively minute rudiment of an inner 

 ramus to the third uropod is not improbably present also in 

 Microprotopus. The new species now to be added to- C heir iphotis 

 has normal lateral compression, the second gnathopods in the 

 male strongly, but not immensely, developed, with the tifth joint 

 small but quite distinct. These are differences from the species 

 Melita megacheles, Giles, for which the genus Cheiripholis was 

 founded, yet neither singly nor together would they seem to 

 justify further generic division. 



Second gnathopods of adult male with wrist and 



hand coalescent, and pahn transverse 1. C. megacheles {Gi\e5). 



Second gnathopods of adult male with wrist and 



hand distinct, and palm deeply excavate 2. C. australuv, sp.nov. 



CHEIRIPHOTIS AUSTRALIA, sp.7iov. 

 (Plate liv.). 

 Stations 28, 50. 



Body laterally compressed. Head as long as first two segments 

 of peraeon combined, ocular lobe obtusely pointed. Hind seg- 

 ments of peraeon and first three of pleon respectively, longer 

 than those which precede and follow them. Third pleon segment 

 with blunt postero-lateral angle forming a little crenulation more 

 distinct in male than in female. 



Eyes not perceived, probably owing to the condition of the 

 specimens. 



First antennee with first two joints subequally long, third less 

 than half as long as second, flagellum eleven- to thirteen-jointed, 

 accessory flagellum three- to four-jointed, not including rudimen- 

 tary apical joint. 



