Chap. IV. 
CONCH OLOGY. 
4 ° 9 
Species. 
A. Shell fomewhat lieart-Jhaped. 
dione. I. V. tranfverfely grooved, with a double row of 
fpines on the flattened fide. American ocean. This 
Ihell is very rare. 
papilla. * 2. V. fomewhat heart-lhaped, with thickened wrinkles; 
flattened fide with attenuated wrinkles ; lips compli- 
cated ; 2 inches long, i| broad. American iilands, 
Cornwall. 
marica. 3. V. heart-lhaped, with decuffated ftrise, flattened 
margin, lamellated. American ocean. Very rare. 
dlfera. 4. V. fomewhat heart-lhaped, with tranfverfe, re- 
mote, refle&ed grooves ; margin crenulated. Ameri- 
can ocean. Very rare. 
bajana. 5. V. brittle, glabrous, with a few' tranfverfe ftriae. 
Brazil. 
excavata. 6. V. lentiform, tranfverfely ftriated, with a deep, 
heart-lhaped depreffion behind the beaks ; flat fide, 
broad. 
verrucofa. * 7 . V. with membranaceous, tranfverfe, ftriated 
grooves, forming tubercles towards the outer margin ; 
margin crenulated ; 2 inches long, 2 broad. Mediter- 
ranean, Antilles iilands, Cornwall. 
lapicida. 8. V. longitudinally ftriated forwards, and tranf- 
verfely backwards. American iilands. 
divergens. 9. V. white, with fine, crowded, divergent ftrice. 
American iflands. 
cajjina. 10. V. with tranfverfe, recurved, acute grooves; 
pofterior margin crenated, and grooved behind the 
beaks. European feas. It is often found in a folfil 
ft ate. 
cancellata. 11. V. with tranfverfe, membranaceous, remote 
ftrise, and a heart-lhaped depreffion behind the beaks; 
1 inch long, i|- broad. Indian ocean. 
gallina. * 1 2. V. radiate, with tranfverfe, obtufe ft rise ; hind 
tooth of the hinge minute ; margin crenulated ; I inch 
long, i-J broad. American and European feas, Corn- 
wall. 
guineenjis. 13. V. with tranfverfe, acute ftrise ; lips finely ftri- 
ated and rofy ; margin very entire. Africa. 
petulea. 14. V. flightly grooved, margin crenated ; fize of a 
hazel-nut. South of Europe. 
Jlexuofa, 15. V. grooves obtufe, tranfverfe; lips of the ante- 
rior margin with an elevated angle ; 1 inch long, i£ 
broad. American and Indian oceans. 
1 6. V. grooves tranfverfe, parallel, obtufe ; anterior 
margin glabrous ; depreffion behind the beaks ovate ; 
2-i- inches long, 3 broad. India. 
17. V. ftrong and thick, with flight tranfverfe ftrise, 
and covered with a brown cuticle ; within, pale vio- 
let ; margin crenated ; 3 inches long, and nearly 3 
broad. Europe, North America. Shells of this fpecies 
are found foffil in the mountains of Sweden. In North 
America they are called clams , and the Indians make 
wampum or money of them. 
icelandica. * 18. V. thick and ftrong, with flight tranfverfe ftrise, 
and covered with a brown cuticle ; within pure white, 
and fmooth ; margin entire ; 34 inches long, 4 broad. 
Europe, Africa, Cafpian fea, Caermarthenlhire, and 
fhores of Scotland. The filh is employed as food by 
the Icelanders. 
* 19. V. fmooth, with fine tranfverfe wrinkles; mar- 
gin entire ; hind tooth of the hinge lanceolate ; 3 
VOL. VI. Part II. 
erycma . 
mercena- 
ry. 
chione. 
inches long, 3^ broad. Afialic feas ; Cornwall, where 
the fpecies is called queen. 
20. V. fmooth, with a few faint fpots ; i-| inch long, maculata. 
2I1 broad. American ocean. 
21. V. glabrous, with a brown gibbous Hope before, meretrix. 
and gaping membranes ; margin entire. Near the 
mouths of rivers, Indian ocean. 
22. V. fmooth, radiated with white; lips of the an -Iceta. 
terior flope violet ; 1^- inch long, 1^- broad. Mediter- 
ranean and Indian feas. 
23. V. triangular, rounded, gibbous, fmooth, and cajlrenjis. 
marked with angular characters ; 1^ inch long, 2 
broad. Indian ocean, Red fea. 
24. V. fmooth, tranfverfely ftriated before and b z-phryne. 
hind ; pofterior flope obcordate, with violet veins. 
Southern ocean. 
25. V. ovate, compreffed, tranfverfely ftriated, with meroe. 
a gaping future behind ; X \ inch long, broad. A- 
merican and Indian ocean. 
26. V. fubovate, tranfverfely ftriated, and fubpel- minuta. 
lucid ; membranes clofed ; from 1 to 2 inches broad, 
xilong. Iceland. 
* 27. V. oval, longitudinally w'rinkled, femi'ptWviCid, deflorate . 
faintly radiated with purple and white ; !-§- inch long, 
broad. European and American feas, Falmouth. 
28. V. oval, gibbous, longitudinally ftriated, and fmbriata. 
tranfverfely grooved ; margin crenated ; 2 inches long, 
3 broad. Ealt Indies 
29. V. ftriae elevated, decuffated; beart-ffiaped d e- reticulata* 
preffion behind ; margin entire ; 2 inches long, 2 \ 
broad. India. 
30. V. ftrise reticulated, and fcaly on the back part .fquamcfa* 
India. 
3 x . V. roundilh with decuffated, membranaceous/weryvn?, 
ftriae ; lips flexuous. India. 
32. V. triangular, fmooth, retufe behind and be- triple. 
fore ; I inch long, and rather broader. Mediterra- 
nean. 
33. V. with arched, membranaceous, tranfverfe ftriae; plicata* 
pofterior flope reddiffi, heart-lhaped ; lips oblique. 
Indian feas. Very rare. 
34. V. gibbous, with tranfverfe, membranaceous, rugofa. 
arched ftriae ; pofterior flope heart-lhaped ; margin 
crenated ; 2 inches long, 2 broad. India. 
35. V. with tranfverfe, acute ftriae, anteriorly mem -calijle. 
branaceous ; anterior flope lhort, pofterior indiftinCt. 
Red fea. 
36. V. rounded, with decuffated ftriae ; fore-part and granulate, 
crenated margin violet. American ocean. 
37. V. with perpendicular, imbricated ribs, tranf - imbricate. 
verfely ftriated ; margin crenated. It has been found 
in a foffil ftate in France. 
38. V. with fine tranfverfe ftriae, croffing fome d\- divaricate. 
verging longitudinal ones towards the margin ; pofte- 
rior impreffion ovate ; margin crenated, E. Indies. 
39. V. oblong, flattilh, tranfverfe ftriae running contraria. 
contrary behind ; margin crenated. Guinea. 
40. V. oblong, ovate, radiated, with thick, crowd- gallus. 
ed, tranfverfe ftrim ; anterior flope broad, ovate ; po- 
fterior impreffion heart-lhaped ; inch long, 2 broad. 
Malabar. 
41. V. tranfverfely ftriated, the back glabrous; an -flarr.mea, 
terior flope broad, with brown lines ; pofterior impref- 
fiens heart-lhaped, with brown lines. Red fea. 
3 F 42. V. 
