SCIZHOPODA AND ISOPODA FEOM THE BAY OF BISCAY. 191 



the Mediterranean, and their occurrence in the Bay of Biscay merely 

 fills, in part, the gaps existing in their geographical distribution. The 

 remaining species have not hitherto been recorded from localities 

 south of the Britisli and Irish area {Leptomysis gracilis is, however, 

 known from the French side of the English Channel). The majority 

 of them are deep water forms, which recent work has shown to be 

 more or less abundant off the west coast of Ireland on the fringe of 

 the Atlantic slope, and it was only natural, therefore, to expect that 

 their known distribution would be considerably extended when the 

 slope was further explored to the south. 



Siriella norvegica and Schistomysis ornata are here recorded from 

 depths greater than any at which they have up till now been taken, 

 wliile the capture of no fewer than one thousand specimens of 

 Euphausia Millleri and eighty-three of Lophogaster typicus in surface 

 hauls are features worthy of special note. 



The records of Paramhlyops rostrata and Mysidctes Farrani are of 

 interest, since these two species have only lately been described from 

 material collected in deep water off Ireland. 



SCHIZOPODA. 



Family EUPHAUSIIDAE. 



Euphausia Miilleri, Claus. 



Station VIII. ca. one thousand specimens, up to 22 mm. 

 Station X. Twenty-eight specimens, 5-11 mm. 

 The occurrence of no fewer than one thousand specimens of this 

 species in a surface haul. Station X, is worthy of special note. 



Meganyctiphanes norvegica (M Sars). 



Station VIII. Five specimens, 14-28 mm. 

 Station X. ca. three hundred specimens, 11-33 mm. 

 Station XII. Twenty-two specimens, 17-34 mm. 



Nyctiphanes CoucM (Bell). 

 Station X. ca. two hundred specimens, 7-17 mm. 



Nematoscelis megalops, G. 0. Sars. 



Station VIII. Two specimens, 10 and 11 mm. 

 Station X. Thirty-two specimens, 10-18 mm. 



