BIVALVIA. 233 



smooth ; right valve covered with oblique striae ; hinge with two cardinal teeth, and 

 small lateral tooth. 



Length, | inch. Height, \ inch. 



Locality. Mam. Crag, South wold. Recent, British Seas, Mediterranean. 



One specimen was found by Captain Alexander some years since, but it is now 

 unfortunately lost. I am, however, certain of its existence as a Crag shell, and have 

 in consequence given the representation of a recent individual. 



Philippi gives it as a living species in the Mediterranean, but not as a fossil from 

 that part of the world. He places it in his section of the genus " dentibus lateralibus 

 carentes." It is not, however, strictly speaking, destitute of lateral teeth ; there is a 

 distinct and proximate one on the anterior side of the right valve, and another smaller, 

 but more remote, on the posterior margin, immediately beyond the ligamental fulcrum. 

 The right valve is prettily ornamented with numerous oblique strise, placed close and 

 straight on the siphonal side, and are rather more distant and wavy on the anterior 

 half. 



This I have found in the recent state on the sandy shores of the Eastern Coast of 

 England, and almost within the reach of fresh water. It is usually a littoral species, and 

 is said to range to the depth of ten or twelve fathoms. 



9. Tellina donacina, Linnaus. Tab. XXII, fig. 5, a, b. 



Tellina donacina. Linn. Syst. Nat., ed. 12, p. 1118, No. 59, 1767. 



— — Phil. En. Moll. Sic, vol. i, p. 24 ; vol. ii, p. 21. 



— 1 Dnjard. Mem. Geol. Soc. Fr., torn, ii, part 2, p. 258, 1837. 



— — Besh. Exped. Scient. Alg. Moll., pi. 69, figs. 1—3. 



— — Forb. and Hani. Hist. Brit. Moll., vol. i, p. 292, pi. 20, figs. 3, 4 ; 



and pi. K, fig. 4, 1848. 



— — Middend. Make. Rossica, p. 576, 1849. 



— trifasciata. Penn. Brit. Zool., ed. 4, vol. iv, p. 75, No. 33. 



— variegata. Poll. Test. Sicil., vol. ii, p. 45, t. 15, fig. 10. 



— subcarinata. Broc. Conch. Foss. Subap,, p. 512, t. 14, fig. 5, 18 1 4, fide Phil. 



— Llanttvyi. Payr. Cat. Moll. Cors., p. 40, pi. 1, figs. 13, 14, 1826. 



— lusoria. {Say.) fide Lyell. Proc. Geol. Soc., vol. iv, part 3, p. 555, 1845. 

 Donax striatella. Nyst. Coq. Foss. Belg., p. 116, pi. 4, fig. 15 a, b, 1844. 



Spec. Char. Testa transversa, elongatd, vel ovato-oblongd, compressiusculd, tenuissime 

 striata, incequilaterali, latere postico breviore, obtuse angulato ; impressione palliari magno 

 pro/undo. 



Shell transverse, elongate, subtrapezoidal, somewhat compressed, inequilateral, 

 and finely striated ; posterior side the shorter, obtusely angulated ; impression of the 

 mantle large and deep. 



Length, | inch. Height, § inch. 



Locality. Cor. Crag, Sutton. 



Clyde Beds. Recent, Britain, Mediterranean, and North Seas. (3fidd.) 



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