1 28 IIELICIDJE. 



A. tridens, Pulteney. 



Plate CXXV. fig. 9. 



Turbo tridens, Pulteney, Hutchins, Hist. Dorset, p. 46. — Mont. Test. Brit. 

 p. 338, pi. 11, f. 2; Suppl. p. 125.— Maton and Rack. Trans. 

 Linn. Soc. vol. viii. p. 181. — Dorset Catalog, p. 51, pi. 19, f. 12. 

 — Laskey, Mem. Werner. Soc. vol. i. p. 406, pi. 8, f. 11. — 

 Turt. Conch. Diction, p. 219. 

 Helix Goodallii, Ferus. Prodrom. 492, ter. (Cochlodonta). 

 Carycldum Menkeanum, C. Pfeif. Deutsch. Land und Siissw. Moll. pt. 1, p. 70, 



pi. 3, f. 42. 

 Pupa Menkeana, C. Pfeif. Deutsch. Land und Siissw. Moll. pt. 3, p. 62, pi. 7,f. 7, 8. 

 Azeca tridens, Fleming, Brit. Animals, p. 269. — Alder, Trans. Nat. Hist. Soc. 

 Northumb. vol. i. p. 32. — Gray, Manual L. and F. W. Shells, 

 p. 189, pi. 5, f. 52.— Brown, Must. Conch. G. B. p. 42, pi. 14, 

 f. 2. — Sowerby, Conch. Manual, f. 290. 

 Pupa Britannica, Kenyon, Mag. Nat. vol. i. p. 426, f. 182, n. 

 Carycldum politum, Jeffreys, Trans. Linn. Soc. vol. xvi. p. 365. 

 Azeca Matoni, Turton, Manual L. and F. W. Shells, p. 68, f. 52. — Villa, 



Syst. Disp. p. 20. 

 Cionella Goodallii, Jeffreys, Trans. Linn. Soc. vol. xvi. p. 517. 

 Pupa „ Michaud, Comp. Drap. Moll. France, p. 68, pi. 15, f. 39, 40. 



— Lam. Anini. s. Vert. (ed. Desh.) vol. viii. p. 193. 

 Azeca Goodallii, Alder, Mag. Zool. and Bot. vol. ii. p. 110. 

 Achatina „ Rossma>sl. Iconog. Land und Siissw. Moll. pt. 10, p. 33, f. 654. 

 „ tridens, L. Pfeif. Zeitschrift Malacozool. 1846, p. 152; Monog. Helic. 

 vol. ii. p. 277. 



Shell of a narrow chrysalis shape, being elongated- 

 oblong-, subcylinclrical in the middle, and tapering at the 

 blunted extremities, suddenly so below, gradually so 

 above ; tolerably firm, but more or less translucent, highly 

 polished, fulvous or reddish tawny horn-colour (rarely of 

 a greenish white), smooth, excepting a few longitudinal 

 wrinkles towards the not-strongly defined simple suture. 

 Whorls seven or eight, merely but equably convex ; the 

 earlier ones very short and of a slow longitudinal increase ; 

 the penult longer ; the body short (not much more than half 

 as long as the spire), not at all ventricose, but attenuating 

 immediately with a gradual but decidedly convex declin- 



