42 



Remarks. It is with considerable hesitation that I refer this form to Brady's 

 species. I cannot, however, in the rather imperfect description and figures given 

 by that author, find any essential difference which would forbid such an identi- 

 fication. In its general appearance this form closely resembles E. glacialis, from 

 which species it is, however, at once distinguished by the rather different form 

 of the genital protuberance in the female, as also by the great length of the 

 appendicular bristle of the caudal rami, in which latter respect it agrees with E. 

 norvegica. The dense hispidity of the outer caudal segments in the female likewise 

 furnishes an easily recognizable character. In the male the hand of the left last 

 leg looks somewhat intermediate in structure between that of the last-named species 

 and of E. glacialis, the thumb resembling in form that in E. glacialis, whereas its 

 armature more closely agrees with that in E. norvegica. This form is perhaps the 

 largest of all known Calanoids, its size even exceeding that of E. glacialis. 



Occurrence. Several well-preserved specimens of this magnificent form 

 were found in the above-mentioned plankton-sample from St. 34 of the cruise of the 

 "Michael Sars". A single specimen, moreover, occurred in another plankton-sample 

 taken at Stat. 46, at some distance west of the Lofoten Islands. The same species 

 was also procured during the Norwegian North Atlantic Expedition by the aid of 

 the trawl in several places in the Norwegian Sea, and always in great depths, 

 down to 2000 fathoms. The figures given in my account of the Crustacea of that 

 Expedition refer to this species, and not to E. norvegica. In the Polar basin 

 crossed by Nansen, this form did not occur. 



Distribution. South Atlantic Ocean in lat. 36 44' S., long. 46 16' W., 

 depth 2650 fathoms (Brady). 



Fam. 7. Phaennidae. 



Syn: Scolecithricince, Giesbrecht (part). 



Characters. Form of body, as a rule, rather robust, with the anterior 

 division more or less tumefied. Cephalosome coalesced with the 1st pedigerous 

 segment or imperfectly defined from it; frontal part rounded, rostral prominence 

 with or without tentacular appendages. Last segment of nietasome more gene- 

 rally defined from the preceding one. Urosome comparatively short, with the 

 genital segment in female not very protuberant below, last segment small. Eye 



