oo 
bo 
A. O. WALKER. 
Lower antennze about half as long as the upper, the peduncles being subequal ; 
second and third joints subequal. 
Mandibles: First and second joints of the palp together longer than the mandible 
and four-fifths of the length of the third joint. 
First mazxille: Inner plate with five or six sete. 
Maxillipeds as in E. longipes, Stebbing. 
First gnathopods: First joint robust ; hinder angle of the third joint acute, as well 
as the carpal spur, densely setose ; hand much longer than wide. 
Second gnathopods rather longer than the first, the front margin of the second 
joint produced over the third. 
First and second pereeopods very slender, first jomt about six times as long as wide 
and subequal to the next two; third joint twice as long as the fourth and rather longer 
than the fifth ; all the jomts with a few plumose setze. 
Remaining pereopods increasing in length backwards ; the first joint has the hind 
margin rather concave, ending below in a sharp tooth, except in the third pair; the 
third joint is two-thirds of the length of the fourth, which is about three-fourths of the 
fifth ; all the joints spinous and clothed with long plumose setz. Dactylus slightly 
curved, the point blunt with a curved tooth near it. 
Second uropods : Outer ramus about half as long and wide as the inner; this is a 
little longer than the peduncle, subequal in extent to the third uropods and spinous on 
both margins. 
Third uropods: Rami subequal and similar, lanceolate, rather longer than the 
peduncle, with spines and plumose setze on the inner margin. 
Telson reaching beyond the end of the peduncle of the third uropods, with a small 
notch at the tip, the terminal divisions acute. 
Recognisable by the relatively small eyes and slender hirsute legs. From its 
nearest ally, H holm, H. J. Hansen (Dijmphna Togtet Krebsdyr, p. 42, Pl. 22), it 
differs in the structure of the gnathopods. 
FAM. CALLIOPIIDA, G. O. Sars. 
ORADAREA LONGIMANA.* 
Oradarea longimana, A. O. Walker. 
Cape Adare, 9 Jan. 1902, 20 fm., nine young of various sizes, showing the gradual 
development of the dorsal teeth. Coulman Island, 13 Jan. 1902, 100 fm., three; 
W.Q., 19 Nov. 1902, Hut Point, one, length 20 mm.; 10 Jan. 1903, one; 26 Feb. 
1903, one; 16 Mar. 1903, 35 fm., Hole 7, one ; 30 Sept. 1903, Hole 12, one. 
* Mr. Stebbing remarks on this species (Tierreich, Amphipoda Gammaridea, p. 727): “ Strangely like Lept- 
amphopus novee-zelandie, G. M. Thomson.” It differs, however, from this species as described in Trans. N. Z. 
Institute, Vol. II. p. 239, Pherusa nove-zelande, in having only the first two pleon segments dorsally produced 
in one tooth, instead of the two posterior segments of the mesosome and two anterior of the pleon produced into 
two teeth; also in the upper antenne having an appendage. 
