4*o CON C H O L O G Y. Chan. IV 
corbicula . 42. "V. triangular, fmooth, truncated on each fide, 
with yellowifh rays 5 Hopes heart-fhaped •, margin very 
entire. Atlantic and American feas. Rare. 
Jinuofa. * 43. V. thin, convex, fomewhat triangular, with a 
deep obtufe finus in the middle of the front. Bri- 
tain. 
Tierma- 44. V. triangular, very fmooth, olive coloured, ob- 
phrodita. fcurely banded : anterior Hope heart-Aiaped 3 poAerior 
ovate. Rivers of Guinea. Rare. 
.coexans. 45. V. green, within white, with tranfverfe, une- 
qual, membranaceous Arise 3 margin acute 3 2-J inches 
long, 3 broad. Rivers of Ceylon. 
cq/la . 46. V. gibbous, fnowy ; anterior part convex ; with- 
in pale violet 3 anterior Hope roundilh, polterior heart- 
Ihaped 3 margin very entire. India. 
qffinis. 47. V. thin, glabrous, convex 3 white variegated 
with brown ; pofteriov Hope elongated, with oblique tu- 
mid lips 3 four teeth in the hinge. Mauritius. 
opima. 48. V. thick, convex 3 anterior dope ovate, polterior 
heart-lhaped 3 hinge with three teeth. India. 
triradiata . 49. V. convex, gray, with three blackilh blue 
rays 3 polterior Hope elongated 3 lips tumid. Tran- 
quebar. 
nebuiofa. 50. V. ochraceous, with cinereous and bluilh fpots 3 
anterior Hope oval 3 polterior Hope ovate, bluilh. Tran- 
quebar. 
contempta. 51. V. thick, triangular, equilateral, fmooth 3 beaks 
convergent 5 primary tooth of the hinge crenulated : 
minute. Malabar. 
japonica. 52. V. oblong, ovate, inequilateral ; lid tranfverfe 3 
Arise crowded at the fides 3 polterior Hope oblong, 
ovate. Japan. 
Jlriata. 53. V. ventrieofe, anteriorly angular, with tranf- 
verfe, thick, fmooth and Hightly arched Arise : pofle- 
rior Hope heart-lhaped. India. Rare. 
textilis. 54. V. Oval, quite fmooth, inequilateral 3 Hopes ob- 
long 3 margin very entire 3 inch long, 2\ broad. 
Malabar, Red fea. 
corrugata . 55. V. ovate, whitilh 3 Arias tranfverfe, anteriorly 
thick and Arcing, poAeriorly thin and undulating. Me- 
diterranean. 
monjlrofa. 56. V. ovate, whitilh 5 Arise decuffated 3 hinge with 
only two teeth in the left valve. Nicobar iflands. 
ponderofa. 57. V. folid, weighty, inequilateral, wrinkled on 
both Ades 3 margin crenulated 3 hinge with two teeth. 
Southern ocean. 
fubviridis. 58. V. greenilh, glabrous, thick 3 margin entire3 
beaks prominent. 
rojlrata, 59. V, ovate *3 Arise perpendicular, fcaly, crofiing the 
tranfverfe ones. 
fufea . 60. V. brown, with line, perpendicular Ariae ; 1^ 
inch long, 2 4- broad. 
lujitanica. 61. V. oblong, with fine tranfverfe Arias 3 margin 
crenated. Seas round Portugal. 
punElula - 62. V. ovate, white, with bay lines, and yellowilh 
la. dots. Corfica. 
fafeiata. 63. V. round, fmooth, with bay and yellowilh rays, 
partly blue, and partly livid. 
carnea. 64. V. oval, inequilateral, (lightly wrinkled, flefii- 
coloured, with three rays 3 \\ inch long, 2\ broad. 
rdrgata. 65. V externally Aeel blue, with yellow rays 3 in- 
ternally violet. Indian ocean. 
v^rjico/or. 66. V. oval, obliquely Ariated, whitilh ; rays white, 
tawney, bluilh and red. 
a. 
6y. V. ovate, inequilateral, finely Ariated and dot- variegata. 
ted with blue : rays browniAi and black. 
68. V. ovate, violet 3 Arise perpendicular 3 li mchamethy/li- 
long, broad. . na . 
69. V. poAeriorly ovate, tranfverfely and unequal -ca/lipyga. 
ly Ariated, and marked with angular lines. Shores of 
Lifbon. 
70. V . ovate, with fine decuffated Arise 3 white or fenegalcn . 
fiefh-coloured, varied with brown 3 ii inch broad, not Jis. 
one inch long. Senegal. 
71. V. triangular, white or yellow, with about matadoa. 
40 tranfverfe parallel grooves 3 inch long. Sene- 
gal. 
72. V. heart-lhaped, with tranfverfe, remote, er.cz-fuccinfla. 
vaiea grooves 3 margin crenulated. 
73. V. heart-lhaped, much compreffed, tranfverfely comprejfa, 
grooved. 
74 • V. heart-Aiaped, -poliflied, white, marked with anjlralis. 
brownilh characters ; margin entire. Southern ocean, 
75. V. ovate, livid, with numerous, interrupted, gigantea. 
bluilh rays 3 poAerior Aope ovate. Shores of Ceylon 
and Florida. 
B. Orbicular. 
* 76.. V. lentiform, with crenated, decuffated Arise ; tigerina. 
poAerior Aope impreffed, ovate. American and Indian 
ocean, fhores of Weymouth. 
77. V. orbicular, tranfverfely Ariated, with rough projirata. 
membranaceous lips 3 two inches long, not lb broad. 
Coromandel. 
78. V. lentiform, with glabrous wrinkles, white with penfij! va . 
a longitudinal groove anteriorly on each lide 3 2 inches mca. 
long. America. 
79. V. white, fomewhat glabrous, with a longitudi-^ani/. 
nal groove anteriorly, and hinge without lateral teeth. 
Shores of Iceland and Ferro iAands. 
80. V. lentiform, glabrous, fmooth, .with excavated incntjlala* 
dots. India. 
81. V. lentiform, longitudinally grooved, dotted punbdata, 
within 3 2 inches long, 2 \ broad. India, but rare. 
* 82. V. lentiform, tranfverfely Ariated, pale, with cxohta. 
obfolete rays ; poAerior Aope heart-lhaped : 2 inches 
long, and 2 broad. Norway, and coaA of Britain, 
Cornwall. 
* 83. V. thin, convex, orbicular, whitiAi, tinged with undata. 
yellow, with thin tranfverfe Arise 3 margin waved. 
BritiAi feas, Falmouth. 
84. V. gibbous with tranfverfe, remote, rather ob- tumidula. 
folete grooves 3 margin entire. 
85. V. longitudinally Ariated, with tranfverfe, whit e,jinenjis. 
and violet arches 3 margin interiorly crenated. Chinefe 
Aiores. 
86. V. lentiform, tranfverfely Ariated, with an oh-Jinuata, 
long gaping vent on the anterior Hope 3 hinge with 4 
teeth. Nicobar iAands. 
* 87. V. lentiform, with remote, tranfverfe, membra- borealis 
naceous Arise 5 i-§- inch long, 2 broad. European feas, 
Britain. 
88. V. fublentiform, with wrinkled longitudinal pe&inata. 
grooves, branched 'near the anterior margin 3 i-J- inch 
long, 2 broad. Indian and American oceans. 
89. V. lentiform, compreffed, Ariated, angular 3 th eferipta. 
hinder angle Araight. Indian ocean, and Red fea. 
Very rare. 
90. V. 
