Encyclopaedia Britannica, or, a Dictionary of arts, sciences, and miscellaneous literature : enlarged and improved. Illustrated with nearly six hundred engravings > Volume 6, CHI-Crystallization

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232. K. imperforated, greenifh \ whirls 5, fpirally
angular j throat wide ; 12 lines long. China.
* 233. H. imperforated, ovate, obtufe, clouded with
brown ; whirls 4 or 5 j aperture fubovate ; 1—4 lines
long. Ponds and Pill waters of Britain.
* 234. H. imperforated, ovate, gibbous, with a de-
preffion in the middle of the lip ; whirls 3—5 5 the
firft ventricofe ) fpire acute, fhort; aperture much
dilated j 2—15 lines long. Ponds of Europe, Bri¬
tain.
* 235. H. whirls 25 firft ventricofe j the other mi¬
nute, and placed laterally : pale red, pellucid. Eu¬
rope, Devonfhire.
•a ica. 236. H. imperforated, ovate, pointed j whirls 4 j
wrinkles elevated j aperture ovate, dilated. Shores of
the Baltic.
u oidea. 237. H. imperforated, convex, longitudinally ftria-
ted j aperture roundifti.
>e icua. 238. H. imperforated, convex, ovate j without lip 5
aperture extending to the tip. Mediterranean.
u 4oidea 239. H. imperforated, deprefled, with waved ftriae j
aperture oval j open all the way down ^ whirls 4, la¬
teral. Mediterranean, Atlantic, Indian and North
feas.
n ilis. 240. H. imperforated, fubdepreffed, white j whirls
6 } 6 lines wide. France.
i, jo. 241. H. cylindrical, glabrous ; whirls 4 or 5 j round,
reverfed •, aperture fquare, 6-toothed j 1 line long.
In decayed u’ood. Denmark.
i chum. 242. H. hyaline, fubconic, glabrous j whirls 5, round j
aperture ovate, with three teeth within.
h igua. 243. H, fubimperforated, convex j grooves remote,
compreffed j aperture femiorbicular. Mediterranean
fea.
■< eus. 244. H. imperforated, ovate, black j aperture ovate.
Waters of Greece.
is m. 245. H. fubcylindrical, with decuffated ftriae ; whirls
7, reverfed j 3 very large, depreffed in the middle.
Guinea.
t mora- 246. H. marbled with white, cinereous and blue j
l whirls 5, round j aperture ovate, \ inch long. Rivers
of. Straftmrg.
J \tina. 247. H. chefnut, pellucid, thin ; whirls 4, narrow j
aperture ovate.
1 bris. 248. H. ovate, pointed, pellucid, tranfve rfely ftria-
ted j whirls 7, firft largeft j aperture oblong, ovate 5 9
lines long.
1 ma.' 249. H. ovate, conic, fubimperforated j 2 laft
whirls in the centre of the firft; j aperture orbicular \
l-J line long.
> ta. 230. H. white, folid, opaque 5 firft whirl twice as
large as the reft j aperture large, margined. River
Unftrut.
* .ariT. 251. H. white, opaque, pointed j aperture oval.
Waters of Hamburg.
'I'nda. 252. H. ovate, pointed, fubimperforated \ firft whirl
ventricofe, large ; aperture femicircular j 6 or 7 lines
long. Stagnant waters.
!|'0. 253. H. ovate, pointed; whirls 5 ; firft large, aper¬
ture ovate, oblong. Aquatic.
i ida. 254. H. obtufe j whirls 4, diftant, inflated in the
middle ; aperture orbicular, margined ; 2 lines long.
ykf- 255. H. bluilh, ovate, pointed j whirls 4, a lit-
I* tie ventricofe 3 apertitre oblong, rounded 3 2 lines
iwrg.
o L O G Y. 453
256. H. inflated 3 whirls 4, ihort 3 two lower ones cir.erea.
diftant j aperture orbicular, not margined 3 2 lines
long. Allace.
257. H. imperforated, oblong, white with longitudi-
nal red undulations 3 whirls 6—7, firft thrice as large
as the next 3 inch long.
258. H. imperforated, oblong, thin, brown 3 whirls teres.
4 3 firft ovate, and thrice as large as the next 3 aper¬
ture ovate.
259. H. fubimperforated, oblong, finely ftriated withyh/^r.’fl/tf.
white 3 whirls 5 3 firft twice as large as the next 3 aper¬
ture oval, margined 3 inch long.
260. H. fmootb, brown 3 aperture triangular, max-trigono-
gined 3 minute. Jloma.
261. H. ventricofe, pointed, cinereous 3 firft whirl
large; aperture oval, large 3 margined on one fide 3
1% inch long.
262. H. oblong, pointed, longitudinally ribbed,cnhw/tf.
and tranfverfely ftriated ; whirls 10, equally decrea-
fing 3 aperture oval 3 £ inch long. Coromandel.
263. H. ovate, imperforated 3 whirls 8—9, round,fleregrina*
diftant, and equally decreafing; aperture oval 3 4- inch
long. American iflands.
264. H. oblong, imperforated 3 whirls diftant, ven- danuhia*
tricofe3 aperture orbicular 3 24 inches long. Da-/zV.
nube.
265. H. oblong, imperforated, fmooth, pointed; turbinata*
whirls inflated j the firft larger, the reft gradually de¬
creafing 3 aperture fuboval, margined 3 34 inches long.
Danube.
266. H. oblong, curved, fubimperforated 3 aper-cwfc'tf/tfo
ture oval, margined 3 24 inches in diameter. Da¬
nube.
267. H. thin, fmooth, white, with chefnut bands 3 farz’/fr.
fpire obtufe 3 Avhirls flattilh 3 8 lines to one inch
long.
• 5®
Gen. 30. Nerita, idente. Nerita.
Gen. Char.—The animal is a Umax 3 the flrell univalve
fpiral, gibbous, flattilh at bottom 3 aperture femi¬
orbicular, or femilunar 3 pillar lip tranfverfely trun¬
cated, flattilh.
Species.
A. Umbilicated.
r. N. fmooth ; fpire llightly pointed 3 umbilicus canrena.
gibbous, and bifid. India, Africa, America.
2. N. with decuflated ftriae, and imprefled dots ; czzzzcf/-
fpire fubclavate 3 umbilicus gibbous, bifid. American lata.
illands.
* 3. N. fmooth, gloffy, faintly wrinkled 3 fpire rnCntxglaucina,
obtufe 3 umbilicus rather clofed by the pillar lip,
which is gibbous and two-coloured 3 2 inches long.
Barbary, Europe, Britain.
4. N. fubglobular , umbilicus perforated, equal. In- vitel/us,
dian ocean.
5. N. convex 3 umbilicus fomewhat heart-liiaped,a/i>z/zz?z’»1
with a flattened lobe. Cape of Good Hope, Barbary,
Indian iflands. Extremely rare.
6. N. ovate, glabrous 3 umbilicus partly covered 5 mammilla*
whirls 4 or five 3 aperture ovate.
7. Ni fubglobular, folid, bay with white bands 3/«zrc<sc=
fpire fomewhat depreffed j whirls 4 or 53 an inchz7zhj.
long.
8, N,