NORMAN: ON THE MOLLUSCA OF BERGEN FIORDS. 37 



Peden Hoskynsi, Wyville Thomson. "Depths of the Sea," 

 p. 465 (figura optima). 



In 80 — 180 fathoms south side of Kors Fiord, and to 

 the north of Bukken, off Slettin. The pecuhar character of 

 the vaulted, cup-like scales at once serves to distinguish 

 P. Hoskynsi from its allies. The specimens found near 

 Bukken were small, but Herr Friele showed me examples 

 taken by the Norwegian Expedition last year in the Jan 

 Mayen Seas which were very much larger. One of these 

 (far from the largest) which he kindly gave me, is 18 

 millimetres from side to side. In these larger specimens 

 the vaulted scales are not apparent, but the position they 

 would occupy is indicated by ripple-like undulations in the 

 concentric striae. The Sicilian fossils Peden antiqiiatus and 

 P. fimbriatus of Philippi, appear to be founded on the left 

 and right valve of P. Hosky7isi respectively. The left valve 

 shows no sign of the vesicular, vaulted scales, but is elegantly 

 sculptured with very regular and distinct concentric striae. 



23. Lima excavata, (J. C. Fab.) 



Ostrea excavata, Chem. Conchol. vii., p. 355, pi. Ixviii., 



fig- 654. 



Lima excavata, Reeve. Conchol. Iconica, "Lima," 1872, 

 pl. 1., fig. 2. 



A full-grown, living specimen of this grand shell taken 

 at Station 23; at the other stations marked in the table only 

 single but quite fresh valves were procured. The chief 

 locality for the species is the Hardanger Fiord. 



28. Lima crassa, Forbes. 



Lima crassa, Forbes. 



Limea Sarsii, Loven. Index Moll. Scand. (in Kong. Vet. 

 Akad. Forhand., 1846, p. 186). 



Litna Sarsii, Jeffreys. Brit. Conchol., ii., p, 78, and v., 



p. 169, pl. XXV., fig. I. 



