Chap. IV. C O N C H 
vngularis. 232. H. imperforated, greenjfli 5 whirls 5, fpirally 
angular; throat wide; 12 lines long. China. 
teniacu- * 233. H. imperforated, ovate, obtufe, clouded with 
lata. brown ; whirls 4 or 5 ; aperture fubovate ; 1 — 4 lines 
long. Ponds and dill waters of Britain. 
auricu- * 234. H. imperforated, ovate, gibbous, with a de- 
laria . preffion in the middle of the lip ; whirls 3 — 5 ; the 
firft ventricofe ; fpire acute, (Irort ; aperture much 
dilated; 2 — 15 lines long. Ponds of Europe, Bri- 
tain. 
fcvigata. * 235. H. whirls 2; firft ventricofe; the other mi- 
nute, and placed laterally ; pale red, pellucid. Eu- 
rope, Devonfhire. 
balthica. 236. H. imperforated, ovate, pointed ; whirls 4 ; 
wrinkles elevated ; aperture ovate, dilated. Shores of 
the Baltic. 
neriioidca. 237. H. imperforated, convex, longitudinally ftria- 
ted ; aperture roundilh. 
perfpicua. 238. H. imperforated, convex, ovate ; without lip; 
aperture extending to the tip. Mediterranean. 
halioloidea 239. H. imperforated, deprefled, with waved ftriae ; 
aperture oval ; open all the way down ; whirls 4, la- 
teral. Mediterranean, Atlantic, Indian and North 
feas. " 
mura/is. 240. H. imperforated, fubdepreffed, white ; whirls 
6 ; 6 lines wide. France. 
vertigo. 241. H. cylindrical, glabrous ; whirls 4 or 5 ; round, 
reverfed ; aperture fquare, 6-toothed ; l line long. 
In decayed wood. Denmark. 
carychium. 242 . H. hyaline, fubconic, glabrous ; whirls 5, round ; 
aperture ovate, with three teeth within. 
ambigua. 243. H. fubimperforated, convex ; grooves remote, 
compreffed ; aperture femiorbicular. Mediterranean 
fea. 
corneus. 244. H. imperforated, ovate, black ; aperture ovate. 
Waters of Greece. 
pyrum. 245. H. fubcylindrical, with decuffated ftriae ; whirls 
7, reverfed ; 3 , very large, deprefled in the middle. 
Guinea. 
marmora- 246. H. marbled with white, cinereous and blue ; 
ta. whirls 5, round ; aperture ovate, inch long. Rivers 
of Strafburg. 
achatina. 247. H. chefnut, pellucid, thin ; whirls 4, narrow ; 
aperture ovate. 
lugubris. 248. H. ovate, pointed, pellucid, tranfve rfely ftria- 
ted ; whirls 7, fil'd larged ; aperture oblong, ovate ; 9 
lines long. 
minima .' 249. H. ovate, conic, fubimperforated ; 2 lad 
whirls in the centre of the fird ; aperture orbicular ; 
1 1- line long. 
injlata. 250. H. white, folia, opaque; fird whirl twice as 
large as the reft ; aperture large, margined. River 
Undrut. 
ttlbicans. 251. H. white, opaque, pointed; aperture oval. 
Waters of Hamburg. 
repanda. 252. H. ovate, pointed, fubimperforated; fird whirl 
ventricofe, large ; aperture femieircular ; 6 or 7 lines 
long. Stagnant waters. 
opaca. 253. H. ovate, pointed; whirls 5 ; fird large, aper- 
ture ovate, oblong. Aquatic. 
turgidd . 254. H. obtufe ; whirls 4, aidant, inflated in the 
middle; aperture orbicular, margined ; 2 lines long. 
ccerulef- 255. H. bluilh, ovate, pointed ; whirls 4, a lit- 
cens. tie ventricofe ; aperture oblong, rounded ; 2 lines 
lop O'. 
O L O G Y. 4 S3 
256. H. inflated; whirls 4, Ihort ; two lower ones cinerea. 
didant aperture orbicular, not margined ; 2 lines 
long. Aliace. 
257. H. imperforated, oblong, white with longitudi- undata. 
nal red undulations ; whirls 6 — 7, fird thrice as large 
as the next ; 1^ inch long. 
238. H. imperforated, oblong, thin, brown ; whirls teres. 
4 ; fird ovate, and thrice as large as the next ; aper- 
ture. ovate. 
259. H. fubimperforated, oblong, finely driated with fubflrittta> 
white ; whirls 5 ; fird twice as large as the next ; aper- 
ture oval, margined ; \ inch long. 
260. H. finootb, brown; aperture triangular, mar- Irigono* 
gined ; minute. Jloma . 
261. H. ventricofe, pointed, cinereous; fird whirl tumida. 
large ; aperture oval, large ; margined on one fide ; 
1^ inch long-. 
262. H. oblong, pointed, longitudinally ribbed, acicula. 
and tranfverfely driated ; whirls 10, equally decrea- 
fing ; aperture oval ; £ inch long. Coromandel. 
263. H. ovate, imperforated ; whirls 8 — 9, round, peregrina, 
didant, and equally decreafing ; aperture oval ; 4 inch 
long. American iflands. 
264. H. oblong, imperforated ; -whirls didant, ven -danubia- 
tricofe ; aperture orbicular; 2\ inches long. Da -Its. 
nube. 
265. H. oblong, imperforated, fmooth, pointed ; turbinata* 
whirls inflated ; the fird larger, the red gradually de- 
creafing ; aperture fuboval, margined ; 3^ inches long. 
Danube. 
366. H. oblong, curved, fubimperforated ; aper -curvata* 
ture oval, margined ; 2-§- inches in diameter. Da- 
nube. 
267. H. thin, fmooth, white, with chefnut bands ; exihs. 
fpire obtufe ; whirls flattilh ; 8 lines to one inch 
long. 
58 
Nerita. 
Gen. 30. Nerita, Nerite. 
Gen. Char. — The animal is a limax ; the (hell univalve 
fpiral, gibbous, dattilh at bottom ; aperture femi- 
orbicular, or femilunar ; pillar lip tranfverfely trun- 
cated, flattilh. 
Species. 
A . Umbilicated. 
1. N. fmooth; fpire flightly pointed; umbilicus c/mrena* 
gibbous, and bifid. India, Africa, America. 
2. N. with decuffated ftria?, and impreffed dots \ cance!~ 
fpire fubclavate ; umbilicus gibbous, bifid. American lata. 
iflands. 
* 3. N. fmooth, gloffy, faintly wrinkled; fpire rather glaucina. 
obtufe ; umbilicus rather doled by the pillar lip, 
which is gibbous and two-coloured ; 2 inches long. 
Barbary, Europe, Britain. 
4. N. fubglobular , umbilicus perforated, equal. In- viteilus, 
dian ocean. 
5. N. convex ; umbilicus fomewhat heart-lhaped , albumen., 
with a flattened lobe. Cape of Good Hope, Barbary, 
Indian iflands. Extremely rare. 
6. N. ovate, glabrous; umbilicus partly covered mammilla. 
whirls 4 or five ; aperture ovate. 
7. N. fubglobular, folid, bay with white bands \lencozo. 
fpire fomewhat deprefled;. whirls 4 or 5 ; an inch nias, 
long, 
. 8. N. 
