58 HELICID^. 



Hist. Dorset, p. 47.— Mont. Test. Brit. p. 415, pi. 24, f. 1.— 

 Maton and Rack. Trans. Linn. Soc. vol. viii. p. 195. — Dorset 

 Catalog, p. 53, pi. 20, f. 7.— Turt. Conch. Diction, p. 49.— 

 Jeffreys, Trans. Linn. Soc. vol. xvi. pp. 334, 508. — Turt. 

 Manual L. and F. W. Shells, p. 40, f. 31. — Fleming, Brit. 

 Anim. p. 261. — Gray, Manual L. and F. W. Shells, p. 160, 

 f. 31. — Thompson, Ann. Nat. Hist. vol. vi. p. 28. — Brown, 

 Illust. Conch. G. B. p. 49, pi. 17, f. 42, 43, 44.— Chemn. (ed. 

 Klist.) Conch. Cab. Helix, No. 129, pi. 22, f. 15, 16, 19, 20.— 

 L. Pfeif. Monog. Helic. vol. i. p. 157. 

 Helix variabilis, Drap. Moll. Terr, et Fluv. France, p. 84, pi. 5, f. 11, 12.— 

 Lam. (ed. Desh.) Anim. s. Vert. vol. viii. p. 58. — C. Pfeif. 

 Deutsch. Land und SUsswas. Moll. pt. 3, p. 28, pi. 6, f. 10, 

 13.— Philippi, Moll. Sicil. vol. i. p. 132. — Rossmassl. 

 Iconog. Land und Susswas. Moll. pt. 6, p. 31, f. 356. 

 Dupuy, Moll, du Gers, p. 16. — Morelet, Moll. Terr, et 

 Fluv. Portugal, p. 72. 

 F „ ericetoritm, Chemn. Conch. Cab. vol. ix. f. 1194, 1195. 

 „ zonaria, Donov. Brit. Shells, vol. ii. p. 65. 

 „ sulalbida, Poiret, Prodr. Coq. Terr, et Fluv. Aisne, p. 83. 

 „ striata, Beard, Coq. Terr, et Fluv. Paris, p. 36, pi. 2, f. 5, 6. 

 „ Pisani, Dillw. Recent Shells, vol. ii. p. 911. 

 Xeropldla variabilis, Held, Isis, 1837, p. 913. 

 Theba virgata, Beck, Index Moll. Mus. Christ. Frid. p. 14. 

 var. lldix monilifera, Menke, Synopsis Mollusc, ed. 2, p. 22. 

 var. „ Terverii, Michaud, Comp. Drap. Moll. Terr, et Fluv. France, p. 26, 

 pi. 14, f. 20, 21. — Rossmassl. Iconog. Land und 

 Susswas. Moll. pt. 6, f. 354 d ; and pt. 9, p. 7, f. 565, 

 566. 

 Xerophila „ Held, Isis, 1837, p. 913. 



Theba „ Beck, Index Moll. Mus. Christ. Frid. p. 12. 



Shell of a somewhat depressed, turbinate form, moder- 

 ately strong, nearly opaque, not polished, smooth or faintly 

 striated, adorned with chocolate-coloured or rich dark 

 brown spiral bands on a white ground, frequently with a 

 lather broad band winding along the base of the lesser 

 volutions, and continued just above the middle of the 

 body whorl, with three or four additional narrow bands of 

 the same hue upon the basal region of the shell, which are 

 occasionally confluent, and one or sometimes two of them 

 broken into streaks or spots. Spire somewhat raised ; 



