96 MOLLUSCA FROM THE CRAG. 



EULIMA,* Itisso. 1826. 

 TURBO (spec.) Linn. 

 HELIX (spec.) Mont. 

 Niso. Risso, 1826. 

 PHASIANELLA. Flem. 1828. 

 PASITHEA. Lea, 1833. 

 BONELLIA. Desk. 1834. 



POLYPHEMOPSIS (?). Portloch. 



Gen. Char. Shell elongate, subulate, smooth, and glossy ; spire elevated, composed 

 of numerous volutions, sometimes contorted ; apex generally acute ; aperture ovate, 

 rounded at the lower part, terminating in an acute angle above ; outer lip simple, 

 slightly obtuse, occasionally thickened, straight, or incurved ; left lip slightly reflected ; 

 columella smooth ; operculum corneous. 



The glossy exterior, subulate form, generally small and almost undefined suture, 

 with the flat volutions, will readily distinguish the shells of this genus from all others, 

 when they are in good preservation. Species of this genus are considered to have 

 existed in the earliest geological periods, but they are not at present well determined. 

 Several new and beautiful species have been found by Mr. Edwards in the Eocene 

 formations of England, and fifteen recent ones are figured by Mr. G. B. Sowerby, jun., 

 in his ' Conchological Illustrations,' some of which have been placed in a new genus 

 by Deshayes, under the name Bonellia. 



1. EULIMA POLITA. Linn. Tab. XIX, fig. 1, a b. 



TURBO POLITUS. Linn. Syst. Nat. p. 1241, 1767. 

 L^VIS. Penn. Brit. Zool. t. 79, 1779. 



ALBUS. Don. Brit. Shells, pi. 177, 1802. 

 HELIX POLITA. Mont. Test. Brit. p. 398, 1803. 

 RISSOA Boscn. Payr. Cat. des Moll. p. 112, pi. 5, fig. 15-16, 1826. 

 PHASIANELLA POLITA. Flem. Brit. An. p. 301, 1828. 

 MELANIA Boscn. Phil. En. Moll. Sic. torn, i, p. 157, 1835. 

 EULIMA POLITA. torn, ii, p. 134, 1844. 



ANGLICA. G. Sow. Conch. Illust. fig. 5, 1838. 



POLITA. S. Wood. Catalogue 1842. 



Thorpe. Brit. Mar. Conch, p. 187, fig. 49, 1844. 



En. Testa elongatd, lanceolatd, turritd, nitidissimd, polita ; an/ractibm tredecim, 

 planiusculis, contiguis ; suturd vix distinctd ; aperturd ovatd, sup erne acuminatd. 



Shell elongate, lanceolate, subulate, smooth, strong, and glossy, with thirteen con- 

 tiguous and flattish volutions ; suture ill defined, scarcely distinct ; outer lip nearly 



* Etym. (?) 



