488 PROFESSOR CHARLES CHILTON ON THE 
Eyes completely absent. Upper antenn reaching considerably beyond peduncle 
of lower. First joint of peduncle very stout, produced at inner upper angle into a 
long acute spine reaching beyond the end of second joint, and with a blunter and shorter 
spine on under outer side ; second joint produced into subacute spine on the outer side ; 
third joint with small spines on the outer and inner sides, the outer one tipped with 
sete, flagellum longer than peduncle, rather stout, especially towards base, and having 
some of the basal joints slightly produced below and bearing the sensory sete. 
Lower antennz as long as head and first five segments of pereeon ; last joint of 
peduncle somewhat compressed laterally, longer than preceding, which is slightly keeled 
above and produced at the extremity. 
First gnathopod simple, fairly stout ; carpus much broader and longer than propod ; 
the lower margin of merus, carpus, and propod spinose. Second gnathopod similar to 
first in size and form. 
First and second perzeopods longer than gnathopods and somewhat slender. Third 
perzeopod much longer than second, its basal joint narrow, with ridge running 
down the middle of outer side; propod much longer than carpus. Fourth 
pereeopod similar to third, but considerably longer; lower posterior angle of basal joint 
quadrate and not produced. Fifth pereeopod much longer than the fourth ; basal joint 
broader, produced posteriorly at upper part into a rounded lobe below which the margin 
is deeply concave ; postero-inferior angle produced into an acute point reaching almost 
as far as the end of the ischium. 
First uropod with base much longer than the subequal branches and grooved above ; 
branches narrow-lanceolate, ending acutely, the outer one folded in under the inner. 
Second uropod similar, but with peduncle as long as inner branch ; the outer branch 
not much more than half the length of inner. ‘Third uropod with peduncle very short, 
produced above on outer margin into an acute spine which reaches as far as the end of 
the telson; the two branches subequal, narrow-lanceolate, flat, the outer one folded 
under the inner. Telson flat, laminar, scarcely narrowed, emarginate posteriorly. 
On the whole, this species seems to come fairly well under Acanthonotozoma, though 
it would not be difficult to find points in which it does not quite fit the generic 
description. Both gnathopoda are simple, but the first is neither slender nor feeble. 
The mouth parts have not been examined in detail, but do not appear especially drawn 
out for piercing; the palp of the mandible is slender, that of the maxilliped is 
small and slender, and shorter than the very large outer plate, which is much larger 
than the inner plate. 
Genus Leprampuorus G. O. Sars, 1893. 
Leptamphopus nove-zealandizx (G. M. Thomson). 
Pherusa nove-cealandie G. M. Thomson, 1879, p. 239, pl. x.0, figs. 2, 2a-c. 
Panoplea debilis G. M. Thomson, 1880, p. 3, pl. i. fig. 3. 
Oradarea longimana Walker, 1903, pp. 40 and 56, pl. x. figs. 77-89, 
