TURBO. 879 



QUADRIDENS. 152. Shell sub-cylindrical, and the 

 Tvhirls reversed; aperture with four white 

 teeth. 



Turbo quadridens. Gmelin, p. 3610. 



Turbo Uva, Var. y. Gmelin, p. .5604. 



Turbo Uva terrestris. Chemnitz, ix. part 1. p. 123. t. 112. 



f. 965. 

 Helix quadridens. MtiUer Verm. ii. p. 107. 

 Bulimus quadridens. Bniguiere Enc. Meth. p. 351, 

 L'Anti-barillet. Geoffroy, p. 65. t. 2. 

 Lister Coiich. t. 40. f. 38. 



Inhabits walls, old trees, moss, and under stones, about Pa- 

 ris. Geoffroy. Narbonne. Lister. Italy. Midler. Among 

 moss on the rocks of La Valette near Montpellier. Bni- 

 guiere. 



Shell from three and a half to five lines long, glabrous, and of 

 a yellowish colour, with seven minutely striated whirls ; the 

 aperture is oval, contracted, marginaled, and white ; it has 

 two teeth within the margin of the outer lip, one at the base 

 of the pillar, and a fourth in the middle of the pillar-lip. 

 Gmelin has strangely cited the same figure of Lister's for T. 

 perversus, for a variety of T. Uva, atid for the present spe- 

 cies. 



SEXDENTATUS. 1-33. Shell sub-cylindrical, smooth, 

 with five rounded whirls, and the aperture 

 six-toothed. 



Turbo sexdentatus. Montagu Test. p. 337. t. 12. f. 8. 



Maton and Racket, in Lin. Trans, viii. p. 183. Dorset 



Cat. p. 52. t. 19. f. 12.* 

 Helix minuta. Muller Ferm. ii. p. 101.? Gmelin, p. 



3660. .? 

 Buhraus minutus. Bruguiere Enc. Meth. p. 310. ? 

 Inhabits marshy places in the West of England, sometimes on 



Iris pseudacorus. Montagu. 

 Shell about a line long, and half as broad, of a brownish or 

 reddish horn-colour, with five rounded convex whirls ; the 

 aperture is somewhat angulated, with four teeth on the outer, 

 and two on the pillar-lip. It might at first sight be mistaken 

 for the young of T. Muscorum, but the more distorted and 

 toothed aperture affords specific marks of distinction. As 

 Mr. Montagu has justly remarked, if Muller had not express- 

 ly said ' Apertura ovali edentula,' we should have had no 

 doubt of this being his Helix minuta ; the teeth, however, 



