118 MR. F. E. BEDDARD ON ISOPODA COLLECTED [Feb. 2, 
claw ; in the posterior appendages this terminal joint is furnished 
at its distal extremity with a circlet of slender spines and a long, 
mesial, slender hair. 
1. NEOTANAIS AMERICANUS, N. Sp. 
The species is represented by two specimens, both males, mea- 
suring about 7 millim. The body is elongated and everywhere of 
approximately the same diameter. The cephalothorax has a convex 
anterior margin ; on either side of the antennules are the minute, 
but separate, ocular lobes, which, however, show no traces of ocular 
structures. The thoracic segments increase in length up to the 
fourth, after which they diminish. The five anterior abdominal 
segments are subequal, the terminal segment is of course longer, it 
terminates in a minute, median, triangular process. The antennules 
consist of a three-jointed peduncle, and a four-jointed flagellum, the 
joints of which are very minute. In the antenne the peduncle is 
tive-jointed, and the flagellum consists of four joints. The chelipeds 
are short and stout. ‘There is no difference in size between any of 
the succeeding thoracic appendages, only the difference in the 
terminal joint referred to above. All the abdominal appendages are 
present ; the wropoda consist of a very stout basal joint, with which 
are articulated the long eight-jointed endopodite and the small two- 
jointed exopodite. 
Station 45; 1250 fathoms. Station 323; 1900 fathoms. 
Genus LerroGnatuiA, G. O. Sars. 
1, LeproGNATHIA AUSTRALIS, 0. sp. 
A single female example of this species was dredged in shallow 
water at Kerguelen, it measures 4 millim. The body is extremely 
narrow and elongated. The cephalothorax is longer than the first 
segment of the thorax, but not so long as the first two segments ; 
the eyes are completely absent ; the first segment of the thorax is 
shorter than any of the three following, which are subequal, and each 
about half as long again as the first segment; the fifth segment is 
shorter than the fourth, but a trifle longer than the first; the last 
segment of the thorax equals the first in length; the first pair of 
thoracic appendages are articulated close to the anterior margin of 
their segment ; the second, third, and fourth pairs at about the 
middle of their respective segments ; the last two pairs are articulated 
a very little nearer to the posterior margin. The abdomen is 
altogether as long as the last two segments of the thorax and one 
half of the fourth. The antennules are not so long as the cephalo- 
thorax, they are four-jointed. The chelipeds are stout and robust, 
all the joints are smooth, the distal joints are not serrated as in 
L. longiremis, the three anterior pairs of thoracic appendages are 
more slender than the posterior pairs. The rami of the uropoda are 
both biarticulate, but the endopodite is much longer and stouter than 
the exopodite. 
Kerguelen, Christmas Harbour, 120 fathoms. 
