60 i Proceedings of the Royal Irish Academy. 



[Nuculana 2^ermila (Miiller). {Leda pernula, Jeffreys, B.C.)] 



. . . iv., . .. 



iv. "Porcupine " Exp., 1869, 251-539 fms. (Jeffreys, '79). 



Distrihution. — Arctic seas in both liemispheres to W. France ancll 

 ISTew England. Eering Strait. 



Nuculana minuta (Miiller). {Leda minuta, Jeffreys, B.C.) 

 i., ii., . iv., v., . 



i. Generally distributed in sand, &c., in the coralline zone and deeper 



water, 

 ii. Portmarnock (Brown, '44 ; "Warren, f. Thompson, '56) : Dublin 

 Bay (Brown, '44; living, rare, Kinahan, '61) : Dalkey Sound 

 and Eilliney Bay, very rare (Walpole, '53a). 

 iv. Bantry Bay (Leach, '52) : "Porcupine" Exp., 1869, 85-110 fms. 



(Jeffreys, '79). 

 V. "West of Ireland, rare (Turton, '19). 



Yar. hrevirostris, Jeffreys. All the Irish coasts (Jeffreys, '63). 

 Distrihution. — Arctic seas^in both hemispheres to "W. France, New 

 England, and Japan. 



\_Nucidana ^nessanensis (Seguenza).] 



. . . iv., v., . 



iv. "Porcupine" Exp., 1869, 370-722 fms. (Jeffreys, '79). 

 V. "Porcupine" Exp., 1869, 422-816 fms. (Jeffreys, '79). 



Distrihution. — Norway to Mediterranean. Azores. Morocco. 

 Canaries. New England to Barbadoes (Dall). North Atlantic, 

 '■ Valorous." 



\_N'uculana pustidosa (Jeffreys).] 

 . . . iv., v., . 

 iv. "Plying Eox" Exp., 1889, 1000 fms. (Smith, '89). 

 V. "Porcupine" Exp., 1869, 816 fms. (Jeffreys, '79). 

 Distrihution. — North Atlantic. Deep water. 



\Nucvdana frigida (Torell) . ] 



. . . iv., v., . 



iv. E. I. A. Exp., 1888, 345 fms. (Chaster, '98). 

 v. "Porcupine" Exp., 1869, 165 fms. (Jeffreys, '79). 



Distrihution. — Arctic seas to Mediterranean and New England. 

 N. Japan. 



