AMPHIPODA — STBBBING. QQ^ 



named a new species F. nana, with the not unneeded warning 

 that this form, known only in the female, would probably have to 

 be referred to a new genus. At the same time he suggested that 

 P. reinhardi, Kroyer, might perhaps be allowed to include 

 P. temdcornis, Sars, P. 2)ollex, Walker, and P. longicaudatun 

 (Bate). The elongated eye-lobes of the last-named species seem to 

 make its identification with P. reinhardi very doubtful, while 

 they bring it into proximity with the Australian species about to- 

 be described. 



PHOTIS DOLICHOMMATA, sp.nov. 



(Plate IvB.) 



Stations 28, 35, 37, 44, 48, 49, 57. 



This abundant species appears to exceed all other known 

 members of the genus in the prolongation of the apically rounded 

 eye-lobes, in the size attained by the eyes, the more numerously 

 jointed flagella of the antenn93, the setose furniture of the limbs, 

 and to have characteristic third uropods, in that the second joint 

 of the outer branch is unusually small and the inner branch is 

 rather longer than usual. The second gnathopods also have a 

 distinguishing outline to the palm. 



Though the eye-lobes are always prolonged and round-ended, 

 the dark eyes themselves are variable in size and shape, passing 

 from round to oval in their fullest development. 



In the first antennae the second joint is much the longest, the 

 third joint is not shorter than the stouter first and has a scarcely 

 perceptible rudiment of an accessory flagellum. The principal 

 flagellum may have as many as fourteen joints. The flagellum of 

 the second antennae appears to vary between six and thirteen 

 joints. Both pairs carry numerous and very long setae. 



In the mouth-organs I have not observed any distinguishing 

 features. The mandibles show eight spines in the spine-row, and 

 in the palp the second and third joints are subeqiial. 



The first gnathopods have the rounded lower corner of the side- 

 plates produced forward, its lower margin as in the four following 

 pairs fringed with long setae. The fifth joint is subequal in 

 length to the sixth but a little narrower ; both joints are very 

 setose. The palm is oblique, but not excavate, forming an 

 obtuse angle with the hind margin. The curved finger has the 

 middle part of the inner margin finely serrate, and the whole 

 limb is in near agreement with that of F. longicaudatus, Bate. 

 The second gnathopods differ from those of the latter species a* 

 figured by Sars, and still more from the Indian form figured by 

 Walker. The decurrent lobe ot the second joint represented by 



