202 Dr. C. Chilton on 
with flagellum subequal to peduncle. Gnathopod 1, in 
female, with carpus and propod subequal in length, propod 
oval, palm convex and occupying about half the hind margin; 
in the mature male the propod “widens at the base and has a 
very short, projecting, serrate hind margin, the palm slightly 
concave. Gnathopod 2 in female like gnathopod 1, but 
larger, and with carpus shorter and triangular ; in the male, 
carpus very short, cup-shaped ; propod very large, oblong, 
palm only slightly oblique, well defined, undulating, with 
flat-topped teeth. Perzopoda 3, 4, 5 very stout, subequal i in 
length. Uropod 1 with long curved spine arising from end 
of peduncle and lying between the rami ; uropod 3 in the 
female with both rami slender, about as long as the peduncle ; 
in the male both rami much shorter than peduncle, the outer 
bearing a peculiar spinule serrate towards the end. 
Colour brown. 
Length 4 mm. 
Port Jackson, New South Wales; Griffith’s Point, Victoria ; 
New Zealand, Antipodes Island. 
The specific diagnosis given above has been modified from 
that given by Stebbing. It may be supplemented by the 
following fuller description : — 
First antenne (Pl. VIII. fig. 1) subequal to or slightly 
shorter than the lower, second joint of peduncle equal in length 
to the first, but more slender ; the third about half the length 
of the second; flagellum nearly twice aslong as the peduncle, 
of twenty to thirty. joints; accessory flagellum long, more than 
one-third the length of the primary, and consisting of about 
nine to twelve joints ; the joints of the peduncle and the 
more proximal portions of the flagellum bear small tufts of 
long sete, considerably longer than the width of the joints 
from which they arise; towards the end of the flagellum 
these sete become progressively fewer in number and 
shorter. 
Second antenne (fig. 1): gland-cone very short, last two 
joints of peduncle subequal, both with numerous tufts of long 
sete projecting towards the underside of the appendage ; the 
flagellum is slightly longer than the peduncle and contains 
about fifteen to twenty joints, the more proximal ones bearing 
long sete similar to those on the peduncle. 
Upper lip (tig. 2) with distal border regularly convex and 
fringed with the usual closely-set sete ; attached to this lip is 
a triangular structure, the epistome, which has the extremity 
rounded. 
The mandible (figs. 3, 4, 5) is of normal form, with 
cutting-edge, spine-row, and molar tubercle all well developed ; 
