m MOLLUSCA. PULMONIFERA. Vertigo. 
Muller (Verm. 120.), to which Montagu refers his species with doubt, is 
more probably the T. bidens of Dr Pultney (Dorset, 46.), which he describes 
as having the “ sutures of the volutions elegantly crenated,” and which Ma- 
ton and Rackett (Linn. Trans, viii. 178. t. v. fl 3.) consider as the Turbo 
bidens of Linnaeus, but a species not of British growth. 
lOS. C. pUcatula . — Aperture with five or six teeth on the 
body-lip. 
Drop. Moll. 72. — C. Rolphii of Leach, Turt. on Zool. Journ. No. viii. 
565.— England. 
Length about half an inch, swollen in the middle ; whorls ten or more, round- 
ed towards the apex ; lines of growth well marked, those near the aperture 
wrinkled ; aperture sub quadrangular, contracted on the outer retral angle. 
The teeth vary in number, one at the end of the range large, the interme- 
diate ones small. Examples of this shell were sent me by Dr Leach, as a 
new species, from Charleston Woods, Kent. I agree, however, with Dr 
T urton, in referring it to the C. plicatula of Draparnaud, although the figure 
given in his work, expresses less perfectly the shape of the British shell than 
the one which represents C. bidens. — Dr Turton, when noticing this shell, adds, 
“ At Torquay we found a perfectly formed specimen of the C. parvula.^ men- 
tioned by Dr Leach. It is much less and more slender than C. rugosa of Dra- 
parnaud, and is very faintly striate or smooth, except on the lower volution. 
The two possessed by the Provost of Eton, are no doubt the same. The 
aperture resembles that of C. rugosa'^ 
103. C. lahiata . — Whorls nine, flat; the lines of growth strong, 
continuous. 
T. labiata, MonL Test. Brit. t. 362. t. xi. £ 6. — On trees near London, 
Mr Swainson. 
Length |ths of an inch, lengthened, light brown, opake ; separating line 
obsolete, not inten'upting the striae ; aperture suborbicular, contracted re- 
trally ; pillar-lip with two teeth ; peristome broad, thick, white, nearly free, 
reflected This shell, which has escaped the notice of more recent collec- 
tors, is probably only a variety of C. perversa.^ which exhibits considerable 
modifications of growth. 
(tEN. XXVIII. VERTIGO. — Tentacula two, with eyes at 
the tips ; pillar simple. 
1 04. V. pusilla , — Whorls five ; aperture with teeth on both 
sides. 
Mull. Verm. 124. — Turbo vertigo, Mont. Test. Brit. 363. t. xii. f. 6. — 
Pupa vertigo, Drap. Moll. 61. — Ivy-walls, England. 
Length about half a line, bluntly conical ; whorls rounded, with distinct 
lines of growth ; aperture sub triangular, the base or lip on the body, whorl 
has two conspicuous teeth ; the pillar-lip has one near its retral extremity ; 
the outer-lip has likewise one ; besides these there are sometimes two or 
three smaller intermediate teeth ; perisome reflected at the pillar, forming a 
distinct cavity. 
