174 
HELICID^. 
Inhab. moist woods, under stones. 
Animal grey, paler beneath ; foot slender. 
Shell half a line long, pale chestnut-brown, semi- 
transparent, striolate ; spire composed of five much 
rounded volutions ; aperture reversed, somewhat tri- 
angular, obliquely truncate, with the peristome thin, 
white, and slightly refiected, forming an umbilicus 
behind the pillar ; behind the outer lip is a longitu- 
dinal rib, and two or three transverse pale lines, being 
the reflection of the internal teeth ; teeth two above, 
and five round the mouth, with sometimes an eighth 
tooth on the pillar lip. 
81. 8. Vertigo angustior. Narrow Whorl Shell. 
— Shell ventricose, barrel-shaped, pale fulvous, 
very slightly and sharply striated ; whorls four 
or five, last broad ; mouth sub-triangular ; teeth 
four or five, two on the column and two or three 
on the outer lip; peristome rather thickened, 
(t 12. f. 142.) 
Turbo Vertigo. Mont. Test. Brit. 363. t. 12. f. 6. (not var.) 
— -Vertigo angustior. Jeffreys^ Linn. Trans, xvi. 361.; 
Alder Mag. Zool. and Bot. ii. 112.; Gray., Man. 205. — 
Vertigo Venetzii. Charpent.; Benke., Schw. 18. t. 2. f. 11. ; 
Eossm. Icon. x. f. 650. — Pupa Venetzii. L. Pfeiffer., Helic. 
ii. 264.; Forbes and Hanley., B. M. iv. 112. t. 130. f. 9. — 
Vertigo hamata. Held. Isis, 1837, 304. (?) — Vertigo pli- 
cata. A. Muller, Wiegm. Arch. N. 1838, 210. t. 4. f. 6.; 
Moq. Tand. M. F. ii. 408. t. 29. f. 8. 11. 
Inhab. rejectamenta of a small stream at Marino, 
near Swansea. 
Mr. Jeffreys observes, besides the very different 
contour and more contracted aperture of this shell, 
the circumstance of the back being more sunk in 
