464 THE DEl'THS OF THE SEA. [chap. ix. 



V. Wood, also common to Norway and Shetland, 

 is found fossil in the coralline and red crag, and 

 Fasus sarsi, Jepfreys, common to Shetland and 

 Norway, is found fossil at Bridlington. 



Several species have hitherto been known only 

 from the south, and Mr. Jeffreys finds a difficulty 

 in accounting for their presence. Thus, Tellina cotn- 

 pressa, Buoccni, is known from the Canary Islands 

 and the Mediterranean, and is fossil in the neM^er 

 Italian tertiaries. Verticordia acuticostata, Phxlippi, 



Fig. 76.—JSucci7irtpsis striata, Jeffbeys. Fig. 77. — Latirusnlhus, Jeffreys. 



Ffctjroe Channel. Twice the natural size. Faroe 



Channel. 



I have already referred to as being found on the 

 coasts of Portugal and of Japan. It is a common 

 fossil in the coralline crag of Calabria. The mol- 

 lusca which are of the most special interest, how- 

 ever, are those which we must refer to the abyssal 

 fauna. About this group we know as yet very 

 little. Like the Echinoderms, they seem to be special, 

 and to have a wide lateral extension. Pleuronectla 

 lucida, Jeffbeys (Pig. 78), a pretty little clam be- 

 longing to the Pecten pleuronectes set, is figured 

 both from the North Atlantic and from, the Gulf of 



