AMPHIPODA — STEBBING. 573 



plate, the serrate spines of the outer plate showing great brendlh 

 when favourably placed, the broad apex of the palp finely crenu- 

 late, with a minute spine at the outer corner. Outer plate of 

 second maxillae rather the broader. Inner plate of maxillipeds 

 with three minute spine-teeth on the truncate apex, the very 

 broad oixter plate finely creuulate, and showing some little spine- 

 teeth in preparation for the next moult, fourth joint of palp 

 more than half length of third, not less than half as in W. obesa. 



Firet gnathopods with third joint as long as the fifth, setose 

 on the hind margin, sixth joint without palm, tapering, rather 

 longer than the fifth, finger small, curved. The second gnatho- 

 pods also agree with those of W. obesa, except that the small 

 finger closes over a slightly concave palm, behind which the 

 squamose hind margin is a little obtusely produced. The peraeo- 

 pods are in general agreement with those of W, obesa, except 

 that in the third pair the second joint is broad above as well as 

 below and attached to a bilobed side-plate ; and in the last three 

 pairs the fourth joint appears here to be more widely expanded 

 than in the larger species. The marsupial plates are narrow, 

 with long setfe at the extremity. The branchial vesicles, though 

 not well observed, appear to have accessory lobes. 



The third uropods have the rami longer than the peduncle, 

 laminar, subequal as to length and breadth, the outer with setae 

 only on the inner side, not showing any second joint. The 

 telson is divided for more than three-fourths of its length, tapers 

 to the apices, each of which ends in two small spines. 



Length, 7 '5 ram. from front of head to end of telson. 



Locality. — Off Wata Mooli, 54 to 59 fathoms. 



Genus TRYPHOSA, Borck. 



Tryphosa, Borck., Forh. Selsk. Christiania, 1870 (1871), p. 117. 

 Tryphosa, Stebbing, Das Tierreich, xxi., 1906, pp. 68, 720. 



To the nine species of the genus described in " Das Tierreich," 

 the names of four other species were added in the appendix, 

 T. adarei, Walker, 1903; T. nmrrayi. Walker, 1903 ; T. niujax, 

 Holmes, 1904 ; and T. cucullata, Walker, 1904. Of these, however. 

 Walker in 1907 cancelled T. adarei as being one with T. murrayi. 

 But since both in text and plate T. adarei has page precedence, 

 it seems clear that the name T. murrayi is the one that must be 

 cancelled. More recently the list has been increased by T. 

 onconotus, Stebbing,* and T.coeca, Holmes. ° With the species 

 now to be described the number will be in all fifteen. 



* Stebbing — Ann. S. African Mu?., vi., 1908, p. 65, pb xxxv. 

 5 Holmes— Proc. U.S. Nat. Mus., xxiv., 19U8, p. 496, figs. 7, 8. 



