REPORT ON THE AMPHIPODA. 1385 



ciliated, the outer plates short and broad, their inner edges for more than half the 

 length closely conjoined, scarcely or not at all overlapping, then diverging so as to form 

 a wide shallow cup, with its cavity furred. 



First Gnathopocls. — First joint much bulged near the base on the outer margin ; the 

 hand with two spines on the hind margin of the wrist, none on the front margin of the 

 hand. 



Second Gnathopocls. — There is a single spine on the front margin of the hand. 



In the Perxopods and general details this form closely resembles the larger form 

 from the other side of the Pacific. 



Pleopods with six joints on the outer and five on the inner ramus. 



Uropods. — Peduncles of the first pair equal in length to the inner ramus, reaching a 

 point intermediate between the ends of the peduncles of the second and third pairs ; the 

 inner ramus reaching a little beyond the outer, not quite so far as the outer ramus of the 

 third pair ; peduncles of the second pair intermediate in length between the longer inner 

 and shorter outer ramus ; peduncles of the third pair longer than the outer ramus, the 

 inner ramus broken, probably longer than the outer. 



Telson somewhat triangular but with the apex rounded, on a level with the end of 

 the peduncles of the first uropods. 



Length, a little over one-tenth of an inch. 



Locality. — Station 296, November 9, 1875; South Pacific; lat. 38° 6' S., long. 

 88° 2' W. ; surface; surface temperature, 59° "8. One specimen. 



Hyperia promontorii, n. sp. (PL CLXVL, B.). 



The coalesced first and second and the seventh segments of the perseon the longest, 

 each of the first three segments of the pleon much longer than any of the perseon- 

 segments, their postero-lateral angles rounded ; the body and limbs clotted with a few 

 colour-spots. 



Upper Antennas. — First joint of peduncle longer than broad, the two following 

 joints together more than half the length of the first joint ; the first joint of the 

 flagellum as long as the peduncle, with a thick brush of filaments on the breast, and two 

 or three separate groups of filaments on the narrowed apical part, one group of two being 

 on the tubercular projection of the apex ; the second joint little longer than its distal 

 breadth, its upper margin like that of the first joint straight, its lower margin oblique, 

 produced, distally forming two or three tubercular projections each with one or two 

 filaments ; the remaining joints, which are more than twelve in number, are elongate, 

 linear, with cilia or minute setules here and there ; the slightly produced tubercular 

 apices of the first two joints are the characteristic feature. 



Lower Antenna;. — Opening of the gland-cone tolerably conspicuous ; third (first free) 



(ZOOL. CHALL. EXP. — PART LXVII. — 1888.) XxX 174 



