68 THE VOYAGE OF H.M.S. CHALLENGER. 



Eurycope sp., F. E. Beddard. 



Eurycope sp., F. E. Beddard, 1'roc. Zool. Soc. Lond., 1885, pt. iv. p. 920. 



At Station 147, in company with several specimens of Eurycope sarsii and one 

 specimen of Eurycope fragilis, a fragment of a Munnopsid was dredged which I am 

 inclined to refer to the species just described, viz., Eurycope atlantica. As, however, 

 the specimen is so fragmentary, this identification might very easily be questioned, and 

 I therefore describe the specimen by itself and without giving it a name. 



The fragment measures 11 mm. in length, and consists of the last three segments of 

 the thorax and about the first half of the caudal shield; two of the thoracic appendages 

 belonging to this region of the body have been preserved ; they are characteristically 

 natatory, and like those of other species of the genus Eurycope. 



The thoracic segments are shaped precisely like those of Eurycop>c atlantica, and like 

 them are furnished with a pair of spines, one on either side of the dorsal median line ; 

 the spines of the last segments are quite as conspicuous as those of the first two. 



The boundary line between the last segment of the thorax and the abdominal shield is 

 not perhaps quite so distinct as in Eurycope atlantica; the abdominal shield has at least 

 three spines, placed medially one behind the other on the dorsal margin ; two of these 

 appear to belong to two free segments of the abdomen, which in this species, as in others, 

 are half enclosed by the last segment of the thorax ; one is upon the abdominal shield proper. 



Station 147, off Marion Island, December 30, 1873 ; lat. 46° 16' S., long. 48° 27' E. ; 

 depth, 1600 fathoms; bottom temperature, 34° - 2 F. ; Diatom ooze. 



Eurycope spinosa, F. E. Beddard (PI. X. figs. 6, 7). 



Eurycope spinosa, F. E. Beddard, Froc. Zool. Soc. Lond,, 1885, pt. iv. p. 921. 



One of the most remarkable Munnopsids obtained by the Challenger is the present species. 



It is unfortunately only a mutilated fragment, but sufficient remains to show that it 

 is a member of the family Munnopsidse, and is the type of a new species of that family, 

 probably referable to the genus Eurycope. 



It was dredged from 1950 fathoms of water in the neighbourhood of the antarctic 

 ice barrier. 



The specimen is a fragment of an immature female, consisting of the head and the 

 first four segments of the thorax; it measures 10 mm. in length. 



The most noticeable feature about this species is that it is covered with numerous 

 long and slender spines, an entirely new character in the organisation of the Munnopsidse. 



Apart from the presence of these spines, however, the specimen does not present a in- 

 great differences from other species of the genera composing the family, as will lie 

 apparent from the following description. 



The head and the segments of the thorax appear to be subequal in size. 



