128 DR. G. HERBERT FOWLER ON THE [Feb. 3, 



recorded from the Antarctic region, as well as from the Gulf- 

 Stream proper, the Sargasso Sea, and South Equatorial Drift l . 



EUTHEMISTO LIBELLULA Mandt. 



A single specimen in haul 1 5 d at the surface at midnight. It 

 is widely distributed over the Arctic Seas, but, unlike the two 

 foregoing species, was not taken in southern waters by the 

 ' National.' 



SCINA BOREALIS G. 0. Sars. 



A single specimen from 13 g (465 to 335 fathoms) was acci- 

 dentally included among the Gopepoda sent to Mr. Thompson 

 and identified by Mr. A. O.Walker. According to Canon Norman 2 , 

 the distribution of this species is mesoplanktonic, mostly northern, 

 but also in the Bay of Biscay (960 metres). It reaches to about 

 80 N. 3 



SCHIZOPODA. 



The Schizopoda captured belong exclusively to the Euphausiacea, 

 and are referable to only three species. Several forms which 

 might have been reasonably expected among the captures were 

 absent. A list of the British species with their distribution is 

 given by Canon Norman, in his paper on British Lophogastrida3 

 and Euphausiidae 4 . 



THYSANOESSA LONGICAUDATA Krb'yer. 



A considerable number of specimens of this species were 

 captured : it appeared to be the commonest Schizopod of the 

 Faeroe Channel at the time. The synonymy appears to be 

 Thysanopoda longicaudata Kroyer = Thysanoessa tenera Sars = 

 Thysanoessa longicaudata of Hansen, Norman, Ortmann, &c. 



The species ranges from the "West Coast of Norway right across 

 to Greenland and into the Labrador current ; the * National ' 5 ceased 

 to take it (after almost daily captures up to that moment) from 

 the date of entering the warm water of the Gulf -Stream (' Florida- 

 strom '). Sars 6 , who described the species from deep water in 

 the Yaranger Fjord, records it also as from the surface at four 

 stations between Norway and Jan Mayen on the cruise of the 

 < Voringen ' 7 . It appears, therefore, to be essentially a cold- 

 water species, an Arctic type-form, and was captured by the 

 'Frarn' 8 . 



It has, however, been recorded twice from British coasts 9 . 



1 Vosseler : Amphipoden der Plankton-Expedition, p. 86. 

 f A. M. Norman : Ann. Mag. N. H. (7) v. p. 135. 

 ^ F. Nan sen, op. cit. p. 19. 



4 A. M. Norman : Ann. Mag. Nat. Hist. (6) ix. p. 454. 



5 A. Ortmann : ' Decapoden und Schizopoden der Plankton-Expedition,' p. 14. 



16 G. O. Sars : Forhandlinger Videnskabs-Selskahet (Christiania), 1882, no. 18, p. 53. 

 < G. O. Sars : Norwegian North Atlantic Expedition (Crustacea), pt. ii. p. 13. 

 s F. Nansen : Norwegian North Polar Expedition. G. O. Sars : Crustacea, p. 14. 

 y A. M. Norman : Ann. Mag. Nat. Hist. (6) ix. p. 463 ; and the papers there cited. 



