222 MOLLUSCA FROM THE CRAG. 



Teluna Feuvensis. Gmel. Syst. Nat., p. 3235, 1788. 



— — W. Wood. Linn. Trans., vol. vi, p. 174, t. 15, figs. 20, 21, 1802. 



— KADiATA. T)a Costa. Brit. Condi., p. 209, t. 14, fig. 1, 1778. 



— iNCAKNATA. Penn. Brit. Zool., vol. iv, p. 74, pi. 47, fig. 31, 1776. 



— MCRlCATA. Broc. Conch. Subap., p. ."< 1 1, t. 12, fig. 2. 



— Tui'N'CATA. Sjjenff/er. Fide Lorrn. 



— TUIFASCI.\TA. Von. Brit. Shells, vol. ii, pi. CO, 1800. 

 PsAMJiOBiA Fekroensis. Lamk. Hist. Nat. des An. s. Vert., v, p. 512. 



— — Phil. En. Moll. Sic, vol. i, p. 23, pi. 3, fig. 7, 1836. 



— — Lovhi. Ind. Moll. Scand., p. 42, 1846. 



— — Sismonda. Syn. An. Invert. Pedm. Foss., p. 21, 1847. 



— DiMONTii. Nyst. Coq. Foss. de Belg., p. 103, pi. 4, fig. 12, 1844. 



— L.EVis. Id. Coq. Foss. de Belg., p. 104, pi. 4, fig. 13. 



— MuniCATA. Id. Coq. Foss. de Belg., p. 105. 



— — ? Grateloup. Cat. Zool. des An. Vert, et Invert., p. 07, 1838. 



— AiFiMS? Dugard. Mem. de la Soc. Geol. de France, torn, ii, part 2, 



p. 257. pi. 18, fig. 4, 1837. 



Spec. Clinr. Tcdu Iransvcrvd, ovato-ohlongd, suhaqiiilaterali, tcnui ; concentrice 

 striata; antice rotundaid ; postice iruncatd, angidatd, striatd et decussatd; marline 

 venfrali convexiusciilo ; sitiu palliari mat/no. 



Shell transverse, ovatcly oblone^, nearly equilateral, thin ; concentrically striated ; 

 anterior side rounded ; posterior truncated, and decussated upon the jjostcrior slope ; 

 ventral margin slightly curved ; palleal sinus large. 



Length, \\ inch. Height, -^ths of an inch. 



Locality. Cor. Crag, Gedgrave, Sutton, and Ramsholt. 



Recent, Britain, Mediterranean, Finmark. 



This elegant shell, in its full-grown state, is rare ; but small specimens and frag- 

 ments are by no means scarce. I have assigned it, without a doubt, to the existing 

 species, although some of my fossils appear rather more transverse, or have a some- 

 what greater length comparatively than the recent shell. My Crag specimens are 

 particularly thin and fragile, with scarcely a trace of any muscular impression. In 

 some of the young sjiecimens the radiating strife upon the angular slope of the pos- 

 terior side are strongly marked with decussating lines. 



This is said to have been found fossil in the Drift beds of Lancashire and Ireland. 



2. PsAMMOBi.\ VESPERTIXA, Chemiulz. Tab. XXII, fiff. 2, a — d. 



Lux VEsi'EUTiNA. Cliemn. Conch. Cab., vol. vi, p. 72, t. 7, figs. 59, 60, 1782. 



SoLEN VESPEiiTiNUs. Gmel. Syst. Nat., p. 3228, 1788. 



Teluna vakiabilis. Don. Brit. Shells, vol. ii, t. 41, fig. 2, 1800. 



Gari. Poli. Test. Sicil., pi. 15, figs. 19, 21, 23, vol. i, p. 41, 1791. 



— — Born. Test. JIiis. Coes. Vind., p. 31, t. 2, figs. 6, 7, 1780. 



— ALBIDA. Dillw. Desc. Cat. Brit. Shells, vol. 1, p. 78, 1817. 



