120 



PR00EEDIXG8 OF THE NATIONAL MUSEUM. 



VOL. 37. 



Genus EURYCOPE G. O. Sars. 



EURYCOPE LiEVIS, new species. 



Body oblong-ovate, about two and a half times longer than wide, 

 4 mm. : 10 mm. 



Surface perfectly smooth ; color, in alcohol, yellow. 



Head much wider than long, with the anterior margin produced 



in the middle in a wide truncated process. Eyes absent. First pair 



• of antennae with the first article large and 



dilated; the second and third are very short 



and about equal in length. The flagellum is 



composed of numerous articles. The second 



antennae are broken at the end of the third 



article. 



The first four segments of the thorax are 

 about equal in length and they are also about 

 as long as the head. The first segment is as 

 wide as the head; the three following are 

 equal in width and a little wider than the 

 first. Epimera are present on the second, 

 third, and fourth segments in the form of nar- 

 row plates occupying the entire lateral margin. 

 The last three segments of the thorax grad- 

 ually increase in length ; the fifth is about one 

 and a half times longer than the fourth, 

 but is of equal width ; the sixth is twice as long as the fourth ; 

 the seventh is about two and a half times longer than the fourth. 

 Epimera are present on the last three segments in the form of 

 narrow plates occupying the posterior two-thirds of the lateral 

 margin. 



The abdomen consists of a single, large segment, tapering pos- 

 teriorly to a rounded extremity. The nropoda are double-branched, 

 both branches being very small 

 and short, the inner slightly 

 longer than the outer. 



The first pair of legs aro 

 shorter than the three follow- 

 ing pairs, w^hich are greatly 

 elongated and gradually in- 

 crease in length. The last three 

 pairs are natatory. 



Only three specimens, all mutilated, come from station 4907, 10-20 

 miles southwest of Koshika Islands, Eastern Sea, at Tsurikake Saki 

 Light, S. 83° E., 14.7 miles (lat. 31° 39' 30'' N.; long. 129° 24' E.) at 

 a depth of 40G fathoms in gi'ay globigerina ooze ; from station 4774, 



FIG..45.- 



-EURYCOPE L^VIS. 



X 5J. 



Fig. 46. — EURYCOPE l^vis. One of the 



NATATORY LEGS. X 14|. 



