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 ocvdar 

 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. Tlie antennules 

 consist of a three-jointed peduncle, and a four-jointed flagellum, the 

 joints of which are very minute. In the anteunce the peduncle is 

 rive-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 itropoda 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 Leptognathia, G. O. Sars. 

 1. Leptognathia atjstralis, n. 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 elongiited. The ce])halothorax is longer than the first 

 segment of the rhorax, 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 biartieulate, but the endopodite is much longer and stouter than 

 the exopodite. 



Kerguelen, Christmas Harbour, 120 fathoms. 



