290 TELLINIDiE. 



Cardigan and Caernarvon bays, and Anglesca, in ten 

 fathoms water (M 'Andrew). On the east coast it is not 

 uncommon on the shores of Northumberland (Alder). In 

 Ireland it is generally distributed, but is especially abundant 

 in 13antry bay, becoming comparatively rare northwards 

 (W. Thompson). It is found on both sides of Scotland; 

 Hebrides ; Skye, in forty fathoms, dead ; in various loca- 

 lities and at considerable depths on the Shetland coast 

 (M'Andrew) ; alive in twenty-five fathoms, Eda Sound, 

 Orkuey (Thomas) ; on the Aberdeenshire coast (Macgilli- 

 vray) ; Firth of Forth (Knapp and E. F.). 



Abroad this mollusk is confined to the Celtic and Boreal 

 coasts of Europe, ranging as far north as Bergen (Loven). 

 It appears to be extinct now in the Mediterranean, but 

 inhabited that region during the Glacial Epoch, as we know 

 from the occurrence of its fossil remains in the Sicilian ter- 

 tiaries. It ranges throughout the Meiocene, Pleiocene, 

 and Pleistocene beds of Britain. 



T. BALAUSTINA, Linuffius. 

 Suborbicular, not grooved ; with two lateral teeth in one valve. 



Plate XXI. fig. 2. 



Tellina halaustina, LiNNiEUs, Syst. Nat. ed. 12, p. 111!). — Thompson, Annals 



Nat. Hist. vol. xviii. p. 385. — Jeffreys, ditto, vol. xix. p. 

 313.— PojLi, Test. Sicil. vol. i. pi. 14, f. 17.— Desh. in 



Lam. Anim. s. Vert. vol. vi. p. 209. — Philippi, Moll. Sicil. 



vol. i. p. 25, and vol. ii. p. 21. — Hanl. Recent Shells, p. 



72, suppl. pi. 9, f. 17. — Hanl. in Sow. Thesaur. Conch. 



vol. i. p. 253, pi. 56, f. 10. 

 Lucina „ P.wraudeau, Cat. Moll. Cors. pi. 1. f. 21, 22. 



This recent and very beautiful addition to our Fauna, 

 varies in shape from suborbicular to obovatc, is moderately 

 firm in texture, opaque, and decidedly convex or even sub- 



