1885.] DURING THE VOYAGE OF H. M.S. 'challenger.' 919 



2. EURYCOPE SARSII, n. sp. 



This is one of the largest species of the genus, and was dredged 

 at two stations between Prince Edward's Island and the Crozets. 



The length of the largest individual is 24 millim. 



The head is about equal in size to any of the anterior segments of 

 the thorax. The first four segments of the thorax are of about the 

 same antero-posterior diameter, the fourth being, if anything, rather 

 narrower than the rest ; the lateral diameters of these segments pro- 

 gressively increase, so that the fourth is the widest. The upper 

 surface of these segments, as of the body generally, i^ utterly devoid 

 of spines or tubercles which are often found in this genus ; the first 

 four thoracic segments are concave dorsally, the rest convex ; ihe 

 lateral margins of the terga, as well as of the epimera in the anterior 

 segments of the body, are prolonged into a short forwardly directed 

 spine. Of the posterior thoracic segments the lateral margins are 

 prolonged into a flattened spine ; this is also the case with the 

 antero-lateral margins of the abdominal segment. The abdominal 

 segment is bent down at its extremity ; as in E. novce-zeulandice and 

 other species the surface is divided into two lateral and a median con- 

 vex area by shallow furrows ; there are no lateral processes as in other 

 species, nor is the extremity prolonged but is abruptly truncated. 



The antennge and thoracic appendages were all lost. 



The mandibles are furnished with a three-jointed palp, the last 

 joint set transversely and somewhat clawed ; the mandible terminates 

 in a number of stiff tooth-like processes, below there is a tuft of 

 slender hairs ; the molar process is long and beset with fine hairs. 



The uropoda are minute and biramose. 



Station 146, 1375 fathoms ; Station 147, 1600 fathoms. 



3. EuRYCOPE INTERMEDIA, n. Sp. 



This small species is represented by a single individual, 9 millim. 

 in length. The anterior margin of the head is prolonged into a 

 short rostrum, which is bifid at its tip. The first four segments of 

 the thorax are subequal in length, they are excavated above ; in the 

 dorsal median line of all these segments is a short spine ; the lateral 

 margins of these segments with the possible exception of the fourth, 

 are not prolonged into spines ; but the epimera are so prolonged. 

 The three posterior segments of the thorax have each a pair of 

 short spines, one on either side of the dorsal median line. The 

 shape of the abdominal segment readily serves to distinguish this 

 species from any of its allies ; as in E.fragilis the abdominal seg- 

 ment is notched on either side and front ; beyond the notch is a 

 short transverse process which overlies the uropoda ; the terminal 

 extremity is sn;ooth and rounded off, and not prolonged into a spine. 



Station 252, 274U fathoms. 



4. EuRYCOPE ATLANTICA, U. Sp. 



Tiiis species is represented by a single specimen dredged in the 

 Nortli Atlantic. 



The specimen measured 10 millim. 



