: . Q CRUSTACEA MALACOSTRACA. 111. 



places in the East Atlantic between Eat. 50°25' N. and Lat. 35°53' N., in every case taken in the young- 

 fish trawl, with the length of the wire out varying from 1500 to 2800 m. 



According to all gatherings E. Murrayi is pelagic in the deeper layers of the North-Atlantic. 



90. Eurycope nodifrons n. sp. 

 (PL XIII, figs. 1 a— 1 d). 



Male. Body (fig. 1 a) a little more than two and a half times as long as broad. — The head 

 (fig. 1 b) has no sharply defined front area, and consequently no rostral projection from the vertex be- 

 tween the first joints of the antennulae, but the area in question is raised longitudinally, with its 

 posterior half forming a broad, rounded keel marked off by a transverse impression from the anterior 

 half, which is a much broader, considerably vaulted and rounded protuberance. 



Of the antennulee only the left is present. Basal joint rather plate-shaped, slightly broader than 

 long; the lateral margins converge much forwards to the anterior margin which is transverse, and 

 consequently the joint has no antero-interior lobe; second joint, which is inserted considerably behind 

 the front margin of the first, is medium-sized and slightly longer than the third. — Antenna? (fig. 1 a) 

 with the squama well set off, moderately small and somewhat broad at the base, triangular, scarcely 

 one-third as long as the breadth of the third joint. — Mandibles nearly as in E. cornuta. Maxillipeds 

 (fig. 1 c) in the main as in E. Murrayi, but a little more narrow, and the epipod is about three and a 

 half times as long as broad, with the end obtuse and the outer margin not concave. 



First thoracic segment (fig. 1 a) uncommonly long, much longer than the second, while the 

 fourth is very short at the middle; the epimera considerably produced, seen from above triangular and 

 acute. The three posterior segments with their anterior margins extremely convex, and the segments 

 have a longitudinal median impression. 



Abdomen longer than in the following forms, nearly as long as broad. — The pleopods of first 

 pair in the male (fig. 1 d) have the proximal two-thirds of their outer margin somewhat concave; at 

 the beginning of the distal third they are as broad as at the base, and then each tapers posteriorly; 

 the terminal part of each pleopod is divided by a rounded incision into two lobes, the inner a little 

 longer than broad, distally broadly rounded and much longer than the outer, which is much narrower 

 and shorter and directed more outwards; the broad end of the inner lobe has several setae, while the 

 narrow end of the outer is naked. The lateral plates of the operculum rather broad, with the terminal 

 part feebly produced, and the thick coupling hook originating before the rounded end. — (Uropods lost). 



Length 5 mm. 



Remarks. At first sight E. nodifrons is somewhat similar to E. inermis 11. sp. or E. cor- 

 uitta G. O. S., but on a closer examination it is seen to be intermediate between E. Murrayi and E. 

 inermis in having no front area marked off by keels and no rostral projection, in the shape of the 

 anterior half of first antennular joint, the shape of the three posterior segments and the abdomen, as 

 the segments have the anterior margin very convex, and the abdomen is somewhat long. One of the 

 most interesting differences between E. Murrayi and E. nodifrons is, that in the former species the 

 basal joint of the anterior pairs of legs is not produced as an epimeral triangular plate, while in E. 

 nodifrons epimeral plates are well developed as in E. cornuta and several other species. 



