THE SCHIZOPODA. 107 



Nematobrachiox boopis (Caiman) *. 



This Euphausian, of which eight specimens were taken by the ' Research,' was 

 previously known from a single specimen only. The record suggests that it is not a 

 denizen of the surface. 



It has as yet only been met with in the Eastern part of the North Atlantic (see Holt & 

 Tattersall, o/;. clt. p. 140 ; and Hansen, Bull. Mus. Ocean. Monaco, xxx. 1905, p. 29). 



Sttlocheiron Suhmii, G. O. Sars. 



Widely distributed over the North and South Atlantic Ocean and the Mediterranean, 

 though not extending into Arctic waters. It is an oceanic form confined to the upper 

 strata of the oceans. We follow Hansen {op. cit. p. 30) in regarding <S', longicorne and 

 8. mastigophorum as synonyms. 



Stylocheieon ABBREViATrJi, G. O. Sars. 



West Coast of Ireland, Bay of Biscay; Mediterranean; South Atlantic and Pacific 

 Oceans. *S'. cJielifer, Chun, is a synonym. 



Bentheuphatjsia sp. 



A specimen of Bentheuphausia is, imfortuuately, too small and too fragmentary to 

 allow us to positively assign it to a species, but we suppose it is referable to the only 

 known representative of the genus, B. amUyops, G. 0. Sars, which has been taken in 

 Ihe Bay of Biscay by the Prince of Monaco f . 



B. amhlyops has been met with in widely separated localities, namely, the Tropical 

 and Southern Atlantic, in the seas to the south of Australia (' CliaUeitger '), in the Indian 

 Ocean (Alcock), and in the Bay of Biscay. The range of the species is therefore 

 enormous, and it will doubtless be met with in the intermediate waters when these 

 come to be explored. 



EucoPiA unguicl'Lata (Will.-Suhm). 



This seems to be a widely distributed Atlantic form. For its synonymy see Hansen, 

 Bull. Mus. Ocean. Monaco, xlii. 1905, p. 3. 



Many of these forms do not add much to our knowledge of horizontal distributiou, 

 but the absence of Thysauo'essa longicaudata (Kroyer) is interesting as indicating that 

 the southern range of this typically northern form does not generally extend beyond 

 the latitude of the south of Ireland. 



Gnathophausia zoeci, Suhm, taken l)y the * Tx'availleur ' and the ' Caudan ' in the Bay of 

 Biscay, and by the ' Helga ' on the Irish coast, is not amongst Br. Eowler's captures ; but 

 so large an animal is probably not very numerous in individuals, and may, for anything 

 we know to ihe contraiy, be rather bonthic than planktonic in habit. 



The 'Research' gatherings, which are of plankton, naturally throw no light on the 

 sovithward and bathymetric extension of the benthic Mysids which we have listed from 

 the Irish coast. 



* Report of Sea and Inland Fisheries, Ireland, for 1002 and 1003, pt. ii. .\ppendi.\ Xo. IV. p. 153, pi, sxvi. 

 ■f Bull. Mu3. Ocean. Monaco, xi. 1004, p. 14, and xxx. 1005, p. 24. 



iNGrc;?7> 



