ZONITES. 
99 
inch in diameter, flat above, and a little convex be- 
neath, with six volutions, which enlarge gradually 
from the centre ; of a crystalline or watery trans- 
parency with a slight tinge of green ; aperture 
crescent-shaped ; umbilicus deep and rather large. 
It may be known from the young of any of the 
former species by its watery transparency, and by 
the number and regularity of its volutions, which 
increase in a gradual proportion, not having the 
outer one much larger than the rest. 
c. Shell trochiform^ shining ; axis imperforated. 
(Conulus.) 
33. 9. ZoNiTES fulvus. Top-shaped Snail.- — Shell 
rather conic and trochiform, beneath flattish, 
with six volutions, dark horn-coloured, smooth, 
and glossy ; aperture narrow, crescent-shaped ; 
umbilicus minute, (t. 5. f. 47.) 
Helix fulva. Muller^ Hist 36.; Nilson, 13.; Drap. p. 81. t. 7. 
f. 12, 13.; Rossm. Icon. viii. f. 535.; Forbes and Hanley., 
B. M. iv. 75. t. 118. f. 8, 9. — Teba fulva. Leach., Moll. 
Syn. 72. — Helix trochiformis. Mont. p. 427. t. 11. f. 9.; 
Jeffreys., Linn. Trans, xvi. 331., not Ferussac. — Helix 
Trochulus. Muller‘S ^ Bilhvyn., p. 916. — Helix nitidula. 
F. Alien., Erd. u. Flus. Conch. 53. t. 4. f. 8. — Helix Trochilus. 
Fleming., B. A. 260. — Helix cbersina. Say., Jour. Acad. 
Philad. ii. 156.; Gould. Lnv. Mass. 135. f. 105. — Helix 
Mandralisci. Bivon. — Cornulus fulvus. Fitz. Syst. 94. — 
Polita fulva. Held. Isis. 1837,916. — Petavia trochiformis. 
Bechffnd. 4A. — Zonites (Conulus) fulvus. Moq. Tandon, 
Moll. Franc, ii. 67. t. 8. f. 1 — 4. 
Yar. 1. Mortonii., shell depressed, both sides nearly equally 
convex : Helix Mortonii. Jeffreys, Linn. Trans, xvi. 332. — 
“ Trochus terrestris p. Mortonii Da Co.da.'' Jeffreys. 
Yar. 2. Alderi, smaller, darker. Alder, Mag. Z. and B. ii. 108. 
Inhab. yoods, among leaves and under stones, and 
on decayed wood. 
