658 Proceedings of the Boyal Irish Academy. 



Family. — Yeeticordiid^. 



Lyonsiella alyssicola, M. Sars. 



. . . iv., . . 



iv. "Porcupine" Exp., 1869, 85-110 fras. (Jeffreys, '81). 



Distrihution. — Arctic seas in both hemisplieres to Azores and New 

 England. 



\_LyonsieUa sulquadrata (Jeffreys).] 

 . . . iv., v., . 

 iv. "Flying Fox " Exp., 1889, 1000 fms. (Smith, '89). 

 V. "Porcupine" Exp,, 1869, 816 fms. (Jeffreys, '84). 

 Distrihution. — Both sides of I^orth Atlantic. Deep water. 



Lyonsiella insculpia (Jeffreys). 



. . . iv., v., . 



iv. "Porcupine" Exp., 1869, 85-110 fms. (Jeffreys, '81). 

 V. "Porcupine" Exp., 1869, 85 fms. (Jeffreys, '81). 

 Distrilution. — Both sides of jSTorth Atlantic. Mediterranean. 



[_LyonsieUa yemma (Yerrill).] 

 . . . iv., . . 

 iv. "Flying Fox," Exp., 1889, 1000 fms. (Smith, '89). 

 Distrihution. — ^ . Ireland. jS'ew England. Deep water. 



Family. — Ltoxsiid^. 

 Lyonsia norveyica (Chemnitz). 

 i., ii., iii., iv., v., vi. 

 i. "Magilligan (Miss H. Galwey, f . Hart, '92) : Belfast Lough (Thomp- 

 son, '56) : both sides of Belfast Loiigh, living in 8-12 fms., and 

 Turbot Bank, dead, rare (Hyndman, '58) : off Crawfordsburn, 

 dead, but fresh and valves united (Stewart, f. Praeger, '89) : 

 Donaghadee (Waller Coll. in Dublin Mus.) : Strangford Lough 

 (Thompson, '56 ; 15-25 fms., living, very rare, and 4-8 fms., 

 dead, Dickie, '58). 

 ii. Warrenpoint (Brown, '44) : Dublin coast (Ball, &c., f . Thompson, 

 '56): Portmarnock (J. Adair, f. Adams, '78; Miss "Willan, 

 f. Hart, '92) : Dublin Bay (Jeffreys, f. Forbes & Hanley, '53 j 

 Kinahan, '61) : Dalkey Sound and Killiney Bay (Walpole, '53). 

 iii. Cork, a single valve in red gurnard (Humphreys, '45) : P. I. A. 

 Exp., 1886, off S. coast of Cork, 55^- fms. (Chaster, '98). 



