634 Proceedings of the Royal Irish Academy. 



Cythere, Miiller. 



villosa, Gr. 0. Sars. Yery common iii Berehaven, 4 fathoms. 



concinna, Jones. Found in nearly all the deeper gatherings. 



emaciata, Brady. Common in Berehaven, less so in deeper gather- 

 ings ; not found on the east coasts of England and Scotland. 



qxTadridentata, Baird. Common in Station V. ; rare in Stations 

 YI. and YII. 



tuberculata, G. 0. Sars. A few specimens in Stations Y. and YI. 



dunelmensis, Norman. Frequent, Station Y. ; an Arctic and north 

 European species. 



•whiteii, Baird. Only one specimen from Station Y. A some- 

 what rare species found in S.W. of England, Irish Sea, 

 Belfast Lough, Gulf of St. Lawrence, Levant. 



antiquata, Baird. Common. 



jonesii, Baird. Frequent, except from shallow water. 



fidicula, Brady and Bobertson. A large number of somewhat im- 

 mature specimens, apparently belonging to this species, were 

 found in Berehaven. Eecorded from Shetland and S.E. of 

 England. 



?semipunctata Brady. Yery rare. Stations YII. and YIII. 

 Although a rare species, it extends all round Britain, except 

 towards the northern parts of Scotland. 



Cytheridea, Bosquet. 



papillosa, Bosquet. Bare ; Station Y. 



punctillata, Brady. Common; Station Y. 



sorby ana, Jones. Yery rare ; Station Y. Eecorded from Irish Sea, 



Shetland, Gulf of St. Lawrence, Spitzbergen. 

 elongata, Brady. Common in Berehaven. 



Eucythere, Brady. 



declivis Norman. Common in nearly all the gatherings. 



Kirthe, Brady, Crosskey, and Robertson. 



glacialis, Brady, Crosskey, and Robertson. One or two specimens 

 of this species have been found from 110 fathoms, Station Y. 

 It does not appear to have been previously recorded as 

 occurring in the recent state, but has been found as a post- 

 tertiary fossil in the boulder clay of Scotland and Norway, 

 bartonensis, Jones. Rare ; Stations Y. and YI. 



Xoxoconcha, G. 0. Sars. 



impressa, Baird. Common from Berehaven ; an extremely common 



shallow water species, 

 granulata, G. 0. Sars. Several specimens from Stations Y. and 



YI. ; not recorded from northern parts of Scotland, but found 



in Norway, 

 guttata, Norman. Common in all the gatherings, 

 multif ora, Noj-man. Stations Y., YI., YII. ; more or less common, 

 tamarindus, Jones. Common in all the gatherings. 



