112 MR, F. E. BEDDARD ON ISOPODA COLLECTED [ Feb. 2; 
is similar ; the third and fourth segments have in addition another spine 
upon each side, placed between and behind the two lateral spines ; 
the margins of the epimera are prolonged into three short spines. 
Each of the three posterior thoracic segments has two or three long 
spines on either side; the epimera are large and terminate in two 
stout spines. The two anterior abdominal segments each consist of 
two portions—a narrower anterior and a smaller posterior portion ; the 
former is smooth, the latter beset with spines and tubercles ; on the 
first segment are two particularly long spines, one situated close to 
the ventral margin of the tergum, exactly above this is the other, 
which is of equal length; on the second segment is a lateral spine 
of great length, but situated more dorsally ; the third segment has 
also a pair of lateral spines. The abdominal shield has a dorsal keel 
which is prolonged posteriorly into a curved spine. The whole of the 
dorsal surface is covered with minute pointed tubercles; the lateral 
region of the abdominal shield is flattened as in A. anna, &c., and 
terminates posteriorly on either side in a flattened triangular spine. 
Kerguelen, Royal Sound ; 28 fathoms. ' 
11. ARCTURUS OCULATUS, 0. sp. 
Five specimens of this small species were dredged in shallow 
water off Melbourne, South Australia. The largest measures no 
more than 7 millim. The most remarkable point about this species, 
and one which serves at a glance to distinguish it from any other 
recorded species of the genus, is the elevation of the eyes on to 
stalks as in the genus Munna. The frontal margin of the head is 
broad and truncated ; it is not excavated as in so many other species. 
The first four thoracic segments are subequal in length, they 
are convex posteriorly and flatter anteriorly ; the surface of these 
segments is quite smooth and free from tubercles or spines ; in the 
last three of these segments the epimera are furnished with a long 
spine. The posterior thoracic segments, like the anterior, possess 
an epimeral spine ; each of these segments has also a lateral tergal 
spine. Of the three tree abdominal segments the first and third 
are furnished with a lateral spine on either side, which is absent from 
the middle segment. ‘The abdominal shield is very convex, and 
terminates in a median dorsal spine as in so many other species ; the 
lateral margin of the caudal shield is beset with a series of somewhat 
curved spines situated at equidistant intervals, the lateral margin 
terminates in a longish flattened spine as in A. anna. On either 
side of the dorsal median line is another row of spines, which run 
from end to end of the caudal shield. 
Station 161 ; 38 fathoms. 
Family CyMorHoOIpDs#, 
ANUROPUS, Rov. gen. 
Among the Isopoda dredged during the cruise of the ‘ Challenger,’ 
there are not many deep-sea species which present any striking 
differences from the Isopoda of shallow water. One of these species 
