— I 2 -— 



Posterior division comparatively short, not extending half 

 length of the anterior division. Genital segment somevv^hat 

 symmetrical with the proximal part narrow ; genital protu- 

 berance very large and thick, issuing from about the middle 

 of the segment, extending somewhat obliquely behind ; its 

 apical part becoming" a broad simple rounded tip. The 2nd. 

 and 3rd. abdominal segments each at postdorsal ledge denti- 

 culated with some small spines. Innermost but one of the 

 caudal setae almost twice as long as the others ; appendicular 

 bristle, issuing from the inner corner of caudal rami, excee- 

 dingly elongated, almost attaining the length of the whole body. 

 Anterior antennae slightly attaining the length of the whole 

 body. Anterior antennae slightly attaining " in length the 

 posterior part of the genital segment of abdomen ; articulating 

 from 24 joints ; the last two articulations coalescent. Exo 

 and endopodite of posterior antennae both about equal in 

 length ; 2nd. articulation of the endopodite carries 8 + 5 setae. 

 I St. maxille exhibits 4 at 2nd. joint of basipodite, 9 at exopodite 

 and 4 setae at the last joint of endopodite. ist. pair of legs 

 concaved at outer ledge of its ist. joint of basipodite. 2nd. pair 

 of legs comparatively changed in form at the last joint of its 

 exopodite, from the same of 3 rd. or 4 th. pairs of legs; the 

 spine of 2 nd. joint of its exopodite very long, exceeding the 

 middle of the ist. spine on the 3 rd. The 5 th. pair of legs 

 always wanting. Length of body about 8"^"^. 



Male. — Head coalescent with ist. thoraxsegment. Abdomen 

 5 articulated ; caudal segment very short. Anterior antennae 

 24 articulated ; may be calculated as 21 articulations, by 

 uniting the 9th. with the 11 th. joint and the 23 rd. with the 

 24 th. 5 th. pair of legs exo and endo-podite ; the left endo- 

 podite 1/2 as long as that of right ; each podite single jointed ; 

 perhaps an immature form. Length of body 5-6'^'^. 



Notes. — This form is closely allied to E. norvegica^ but 

 is apparently distinct as respects the structure of the last dorsal 

 segment and genital protuberance etc. 



Loc. — Japan sea ; from the depth about 200 fathoms at 

 the position of 41^,45' N., i43'',oo'E. 



