HE Ld &. 
former, cig which are in particular obvious: on the firtt 
wreath: ‘igh: H. flag- 
primary whorl ben ils. Sedilen: and the remain 
ae more ref than in that fhell.”” Vol. 5. This bbe is 
go cake Shell imperforated, tise pointed, gla- 
ous, horny ; volutions five, ecénd ventri- 
“a Smooth frefo-water fnail, Donov. “Br. Shells, vol 5. 
~271. 
A new fpecies found in fame rivulets in Devonfhire: re- 
verfed fhells of this kind occur fometimes with the others. 
ay set Shell imperforated, 0 
ate. Linn. 
try Da Coka, 
ill. Trianfradtus, 
Helix patris, mud-fnail, Donoy. Br. 
"Thi it re remarkably fragile, pellucid, and membranaceous ; 
with three whorls, the pa very large, the other two {mall ; 
aperture erg lip. th about an inch or rather lefs ; 
colour v generally y: — This fhell is very com- 
mon in a diches, cate, and Siete places,: and 
efpecially in thofe overgrown with w 
Buttaoipes. Shell ovate, ea ly goin horny, brittle ; 
et reverfed; fpire fhort. Donov. Br. 
eceived. from Lincolnthire by the late duchefs. af 
Portland, from whofe colle&ion the. fpecimen at this time 
in our poffeffion was obtained. It isa new {pecies, and ap- 
parently of the aquatic =~ * are’ entirely unac- 
. setiied with its ee és 
GLA indica Aabedd and horny, with 
an ovate aperture. schiK 
Length four lines and a v halé, pellucid, with shoot eight 
round whorls, yes firft with a kidney-fhaped tranfparent 
black belt. mal black with whitifh horns. Inhabits 
moift meadows in Pawnee 
; hell » the hess trun- 
cated upwards ; ; — ovate. Schroet. 
from one to five lines; fhell 
with five whorls, and incumbent 
Sheil horn 
jection; aperture ovate. 
Length from two to bie lines, and inhabits the ftagnant 
were pmark. eer 
y -* fub-conic, with an-acute pro- 
with cinereous dots, and fornithed 
with a gelatinous membrane, covering the 
oon Shell conic-pointed, white with a red band; 3 
aperture 
amas fhell with feven whorls, 
ete bands mere aperture 
eed b ~ ears in and weno 
aperture ovate with a thick white li 
Behmbler sete.  maorem, but is mech more linet 
and pointed ; prs Native of Greece. 
_ Derurra. Shell conic, white, with tranfverfe, rofous 
as and very brittle. 
Inhabits Saxony; fhell eight lines and a half 
olifhed, and obfoletely Bi 
little reflected at the pillar. 
Ventricosa. Shell conie, pale and ftriated ; ; aperture 
ieee Mill. 
th two lines ; whorls feven, = bine outermoit very 
oe of equal width. Inhabits Gre 
= Qeeet Shell conic, brown ; seuss toothlefs ; lip 
long. 
ed; whorls fix, the Eels 
Inhabits Europe, at the roots of trees ; fhell pointed and 
finely {triated ; whorls fix ; aperture oval, with an acute 
margin; lip glofly white. Animal white, pr si duiky, 
eyes black. 
Lusrica. Shell conic, fulvous, — pellucid, and 
acute ; aperture toothlefs ; lip reddifh. Lilt 
Lives among mofs and wet-rotten: woe in Europe ; the 
length two lines and a half; hell engpaan finely polifh 
rarely whitifh with _— or os whorls, and ovate aperture, 
Animal black, beneat 
pe. 
Shell turbinated, cinereous, nearly 
Nerita contorta, 
ConToORTUPLICATA, 
imperforated 3; crown truncated. Gmel. 
ull. 
Found in muddy ditches in Europe ; length two lines 4 
a half; fhell pyramidal, —— and opaque ; wherls abou 
ve 5 rire circinate 
ULARIS. vell imperforated and greenifh; the 
whorls {pirally minis hve: white. Lift. Nerita apllihe, 
Native of China; length twelve lines ; hell conic, very 
finely ftriated traniverfely 3. whorls ies nearly perpendi- 
cular ; aperture roun 
BALTHICA. Shell j i Gontel: ovate and pant with 
elevated wrinkles ; aperture ovate and dilated. 
Ivhabits the fhores ef the Baltic; fhell ilheghs with 
Arheoak black with two tentae 
ERITOIDEA. Shell imperforated, —- and longitue 
dinally ftriated, cleft umbilical; aperture roundifh. Linn. 
» with about forty flrie 
Perspicua. Shell imperforated, convex, and ovate, 
without lip ;. aperture extending to the tip. Linn : 
Allied to the bulla genus; the thell milk taser tranlpe- 
Inhabits the Mediterranea’ 
LiororpEA. — Shell imperfor. deprfi ed, with 
wae ie 5 apr eames and open to both ends. Linn 
Bulla « velutina, 
Clofely allied to = genus en > a thell — iy 
—, white, ee wit or 
with -sighihee satellites outed 
sheet four and vend laterally ; lip very ac sei 
{mall, white with two fhort tentacula ; 
Murauts. Shell imperforated and fabsdeprlled, ‘white 
with fix whorls, shroet. 
readth fix lines; hell pellucid, convex each fides with 
@ thickith white lip." Inhabits France. seta ‘he 
ENTACULATA, at set Paice ovate, pringpncimseg 
peters 7 Donoy. Br. Shells. 
four whorls. 
par ucida, &e. Lift. 
FAS ee a 
- a ee fal Seen turbo tele ewreatha, Bess. 
from whitifh to 
bow a relohy eperculam orate ey horny, and pelucid 
Avnicunant. 
“gh From « one So ee to one-thitd of an inchs hell 
