Mr. J. G. Jeffreys o?i sojne British Shells. 313 



of a dark purplish colour^ and nearly answering Philippics de- 

 scription and figure of Ostrea depress a (vol. i. p. 89. t. 6. f. 3), is 

 occasionally found on the western coast of Scotland. 



Peat en striatus, MUll. Not uncommon on many parts of the 

 western coast of Scotland as well as of Ireland. 



Pecten adspersus, Lam. Pecten danicus, Mart, and Chemn. 

 Pecten glaber, Pennant, Br. Zool. vol. iv. p. 223 ; Mont. Supp. 

 p. 59. t. 28. f. 6 ? Abundant in Loch Fyne, and sparingly on 

 other parts of the western coast of Scotland. A white variety 

 also occurs, although rarely ; and another variety having strong 

 longitudinal strise between the ribs towards the margin. 



Pecten Dumasii, Payr. p. 43. pi. 2. f. 6 and 7. Skye. I can- 

 not agree with Philippi that this is a variety of the last. It is 

 distinguished by being narrower, having the ribs more elevated, 

 and close-set longitudinal prickly strise between the ribs. 



Pecten Pes-felis, Lam. Loch Long, but only single valves 

 occurred to Mr. Barlee. 



Pecten Icevis. On many parts of the western coast of Scot- 

 land. 



Modiola phaseolina, Phil. vol. i. p. 51. 1. 15. f. 14. On many 

 parts of the western coast of Scotland, where it first occurred to 

 me in 1843. 



The Mod. costulata (Risso), Phil. vol. i. p. 50. 1. 15. f. 10, has 

 occurred to me on the southern and western coasts of England. 



Nucula Polii, Phil. vol. i. p. 63. t. 5. f. 10. Oban. This spe- 

 cies has also been found in Dublin Bay, and I believe in other 

 parts of Scotland and Ireland. 



Leda (Schumacher) tenuis. Nucula tenuis, Phil. vol. i. p. 65. 

 t. 5. f. 9. Leda pygmcea, Forbes in Mem. of Geol. Surv. p. 419. 

 Not uncommon on the coast of Skye. 



Area pectunculoides (Scacchi), Phil. vol. ii. p. 44. t. 15. f. 8. 

 With the last. 



Cardium suecicum {Loveni al.). Oban, and on many other 

 parts of the western coast of Scotland. 



Cardium nodosum. Lerwick in 1841, and with the last. 



Tellina balaustina, Poli. Skye. This is the second occurrence 

 of this beautiful species in this country. 



Lucina spiniferu. On many parts of the western coast of 

 Scotland. 



Poronia (?) ferruginosa. 



Artemis (?) ferruginosa, Forbes. In 50 to 100 fathoms, Skye 

 and Loch Fyne : some specimens from the latter place are double 

 the usual size. 



Venus Plagia. Shell oblong, compressed, brownish white, 

 glossy, marked transversely with antiquated ridges, which are 

 stronger towards the margin and anterior extremity, and crossed 



