48 MOLLUSCA. 
18. Herix GRranutara, pl. XVII, f. 8 and 13.—First Ed., 
pl. 40, f. 8 and 13. 
Helix granulata, Alder, Mag. Zool. and Bot. I, p. 1075 
Forbes, Mal. Mon., p. 8; Thompson, Ann. and Mag. Nat. 
Hist., VI, p. 26; Helix hispida, Montagu, Test. Brit., p. 423 ; 
Maton and Rackett, Linn. Tr., VIII, p. 198; Fleming, Edin. 
Ency., VII, p. 79; Ib., Brit. An., p. 261; Brown, Ency. Brit., 
6th Ed., VI, p. 458; Ib., Wernerian Mem., II, p. 225; Turton, 
Brit. Fau., p. 189; Helix sericea, Turton, Man., p. 38; Jeffreys, 
Linn. Tr. XVI, p. 333 and 507; Helix globularis, Jeffreys, 
Linn. Tr., XVI, p. 507; Teba hispida, Leach, Moll. p. 98. 
Shell subglobose, subpellucid, thin, fragile, and of a pale yel- 
lowish horn-colour ; body ventricose, about a third longer than 
the spire, which consists of four rather tumid yolutions, well 
defined by the sutural line, and terminating in a slightly obtuse 
apex; base well rounded, and provided with a very small um- 
bilicus; aperture semilunar, its width exceeding its length; outer 
lip very thin, with a slight internal rib, apparent in the adult 
condition only; pillar lip slightly reflected, at the angle, over 
the umbilicus; whole surface covered with fine, close-set, short, 
downy, whitish hairs, which, when removed, exhibits the mi- 
nutely granulated, shagreen-like, glossy exterior of the shell. 
Diameter a quarter of an inch. 
This species is pretty generally spread over Great Britain. 
It is found in Wiltshire, Devonshire, Lincolnshire, Cornwall, 
Dorsetshire, and Northumberland ; and is plentiful among net- 
tles in the King’s Park, at Edindurgh. In Ireland, I met with 
it at Naas, County of Kildare, and near Downpatrick; Mr. W. 
H. Harvey found it about Limerick and Ballitore; and Mr. 
Humphreys found it at Belgrove, east of Cork. Professor 
Forbes says it is common on the Isle of Man. Its habitat is in 
moist, woody situations. 
20. HeEtix rEvELATA, pl. XVII, f. 3, 4, 5—First Ed., pl- 
40, f. 3, 4, 5. 
Helix revelata, Férussac, Prod., p. 44; Michel, Compl., p. 
27, pl. 15, f.6, 7,8; Deshayes, Lam. An. Sans. Vert., VIII, 
p- 83. ny th 
Shell subglobose, thin, subpellucid, of a pale yellowish-green 
colour; body large; spire small, consisting of three moderately 
raised volutions, ending in a subobtuse apex; base not much 
raised, and provided with a narrow umbilicus; aperture sublu- 
nate, very oblique, and rather rounded; outer lip thin, and 
very slightly reflexed; pillar lip a little reflected over the um- 
bilicus, and shewing only the base of the penultimate volution ; 
surface covered with a few scattered grayish hairs, which, when 
remoyed, reveal a slightly wrinkled exterior. Diameter about 
a quarter of an inch. 
Discovered by me on the Lomond Hills, Fifeshire, Scotland, 
and named Vitrina membranacea in the first edition of this 
work; it has since been met with by Professor Forbes in shady 
places, among nettles, near Dolyle’s Monument, in Guernsey, 
where it is not uncommon. 
21. Hettx sericea, pl. XVIII, f. 43, 44. 
Helix sericea, Miller, Verm. Hist., II, p. 60, No. 258; Dra- 
pernaud, p. 103, pl. 7, f. 16, 17; Pfeiffer, I, p. 34, pl. 2, f. 175 
Kenyon, Mag. Nat. Hist., I, p. 427, f.3; Alder, Mag. Zool. 
and Bot., II, p. 107; Thompson, Ann. and Mag. Nat. Hist., 
VI, p. 26; Rossmassler, Icon., VII, p. 2, pl. 31, f. 428, 429. 
Shell subglobose, thin, diaphanous, subpellucid, and of a 
[ TRACHELIPODA 
reddish horn-colour, with a nearly obsolete, spiral girdle sur- 
rounding the body volutions, producing a somewhat carinated 
aspect ; body subdepressed, very tumid on the sides, consider- 
ably longer than the spire, which consists of four moderately 
rounded, gradually tapering volutions, terminating in a subob- 
tuse apex; base not very prominent, with a rather small umbili- 
cus; aperture sublunate, its length and width nearly equal; 
outer lip thin, destitute of an internal rib; pillar lip a little 
reflected over the umbilicus; whole shell covered with a brown 
epidermis, beset with remote, rather elongated, recuryed, soft 
hairs, which, when removed, exposes a slightly wrinkled exte- 
rior. Diameter about a quarter of an inch. 
Varieties are said to be found nearly white. 
This species differs from H. hispida, in being thinner and 
more globular in form, and in the umbilicus being smaller. It 
will be known from the H. granulata, by being wrinkled, in- 
stead of haying granulations. 
Inhabits woody situations. 
Mr. Alder, who first introduced this shell on the faith of 
Baron de Férussac, gives no locality for it. Mr. Thompson 
gives it as an Irish specimen, from Lagan, near Belfast, but 
considers it as merely a variety of H. hispida. 
22. HeEtix uispripa, pl. XVII, f. 40 and 46.—First Ed., 
pl. 40, f. 40 and 46. 
Helix hispida, Miller, Verm., II, p. 73, No. 268; Draper- 
naud, p. 103, pl. 7, f. 20, 21, 22; Gmelin, Linn. Syst., I, p. 
3625, No. 42; Pfeiffer, I, p. 36, pl. 2, f. 20; Brard, p. 27, pl. 
2, f.1; Turton, Man., p. 57, f.41; Jeffreys, Linn. Tr., XIII, 
p- 338; Lamarck, An. San. Vert., VI, pt. 2nd, p. 92, No. 100; 
Rossmassler, VII, p. 2, pl. 31, f. 226, 227; Alder, Mag. Zool. 
and Bot., II, p. 107; Thompson, Ann. and Mag. Nat. Hist., 
VI, p. 27. 
Shell subdepressed, subdiaphanous, of a brownish horn- 
colour, frequently of a dark reddish-brown; body large, convex 
on the sides, with a pale, central, transverse, subcarinated zone; 
spire small, subdepressed, consisting ef three rather depressed 
and not deeply defined volutions, with a blunt apex; base not 
much produced, and with a deep, moderately-sized umbilicus ; 
aperture moderate, subluniform, somewhat rounded; outer lip 
even, with an internal rib ; pillar lip not reflected; whole exte- 
rior covered with fine, close-set, bristly hairs, which are very 
caducous, when these are removed the surface is slightly stri- 
ated. Diameter a quarter of an inch; its length being hardly 
so much. 
This species is always hairy, and very flat above, even in the 
youngest condition. 
Not uncommon in many parts of Great Britain, and is widely 
spread over Ireland. It is found under stones, decayed trees, 
leaves, &c., both in dry and moist situations. Mr. Thompson 
mentions a well marked variety, which he found in the North 
of Ireland, where it is the most common form. It is larger, 
more depressed, and with a more ample umbilicus, than the 
ordinary form. 
23. Hetix concinna, pl. XVIII, f. 45, 46. 
Helix concinna, Jeffreys, Linn. Tr., XIII, p. 337; Alder, 
Mag. Zool. and Bot., H, p. 107; Thompson, Ann, and Mag. 
Nat. Hist., VI, p. 27; Forbes, Mal. Mon., p. 8; Helix depilata, 
Alder, Mag. Zool. and Bot., II, p. 107; Helix circinnata, Fé- 
russac, Prod., No. 268. 
