66 ftev. A. M. Norman on Crustacea Cumacea. 
long peduncle and two branches furnished with plumose setse. 
Telson short, terminating in three spines (instead of the usual 
fork). Uropods remarkably long and slender. Female un¬ 
known. 
Chalarostylis elegans , n. sp. 
Male (adult). Cephalothorax equal in length to five abdo¬ 
minal segments. Carapace shallow, but wide, length three- 
fifths of entire cephalothorax ; dorsal margin well-arched on 
hinder portion, but depressed on the anterior two thirds of its 
length ; surface microscopically spinulose; lateral margin not 
serrated, gradually sloping upwards, without any sinus, to the 
extremity of the rostrum ; anterior margin {%. e. slope from 
lateral margin) edged with about fifteen spines; anterior 
portion of dorsal margin with a crest of about ten small 
spines. Anterior margin of free cephalothoracic segments 
smooth ; epimera of last segment not posteriorly produced. 
Pleon quite smooth and glabrous. Upper antennae with the 
basal joint covered with numerous spines, especially on the 
underside. Lower antennae as long as cephalothorax, with 
last joint of peduncle and also the flagellum furnished with 
very numerous semiverticils of crowded cilia. First feet 
having first joint more slender than usual, not spined, with 
three to four verticillately plumose short setm on the hinder 
margin ; 2nd joint very short, armed with one long spine; 
3rd joint longer, having one long spine; 4th very long, 
almost as long as three upper joints, and much longer than 
two following combined, armed with ten spines, of which two 
are much longer than the rest, and of the same size as the 
large single spine on the preceding joints ; penultimate joint 
very short, about one fifth the length of 4th ; last joint three 
times as long as penultimate, terminating in spine-like setan 
Three pairs of abdominal feet, each consisting of a long 
peduncle (as long as the depth of the pleon), minutely spinous 
on the hinder margin, and two branches furnished with plu¬ 
mose setrn. Telson short, equalling length of sixth segment, 
but not much more than half the length of fifth, with two 
pairs of lateral spines, and terminating in three spines (in¬ 
stead of the usual fork). Uropods remarkable for their great 
length and slenderness ; peduncle three times the length of 
telson, with twenty-four spines on the inner margin ; inner 
branch with first joint as long as telson, with eight marginal 
spines, 2nd with two, 3rd without any marginal spines; outer 
branch reaching to the middle of the last joint of the inner 
branch, 1st joint with three spine-like setse on inner margin, 
