nucleus. 
rhomboi- 
dea. 
marmora- 
ta. 
Jbapha. 
37 
.jDttrea. 
•maxima. 
Jacob# a. 
ziczac. 
Jiriatula. 
minuta. 
pleuronec- 
tes. 
laurentii . 
CONCH OLOGY. 
Chap. IV. 
* 39. A. obliquely ovate, ftnoolhith, with a triangular 
hinge ; fize of a hazel nut. European feas. It is 
fometimes found foffil. Shores of Britain. 
40. A. entirely white, rhomboid, heart-fhaped, and 
ribbed ; anterior and dorfal ribs knotty ; beaks remote. 
Indian and American oceans. 
41. A. equilateral, thin, fiatlilh, with fine decuffa- 
ted Arise ; beaks approximate ; hinge, arched. Ameri- 
can ocean. 
42, A. ventricofe, with longitudinal ftriae and lines ; 
and angular on one fide; beaks approximate: hinge 
■arched-, brown with a few fpots. Shores of Africa and 
American ocean. 
43, A. oblong, much depreffed, flriated ; beak 
flightly prominent. Ceylon. 
Gen. 14. Ostrea, Oyjler. 
Gen. Char. — The animal is a tethys the (hell bi- 
valve, generally with unequal valves, and flightly 
eared ; hinge without teeth, but furnilhed with an 
ovate hollow, and moftly lateral, tranfverfe grooves. 
Species. 
A. Valves furnijhed with ears, and radiated. The Scallop. 
a. Equilateral ; ears o f the valves equal. 
*1.0. with 14 or 15 rounded ribs, longitudinally 
grooved, with fine tranfverfe Arise ; 5 inches long, 54- 
broad : ears large, with decuffated ftriae ; lower valve 
convex, white, often varied with red bands or fpots 5 
upper valve flat, reddiih. Found in large beds in mod: 
European feas, where they are dredged up, pickled, 
and barrelled for fale. It is faid, that the greateft quan- 
tity is taken after a fall of fnow. This is the lhell 
worn formerly by pilgrims on the hat or coat, as a ma^k 
that they had eroded the fea for the purpofe of pay- 
ing their devotions to the Holy Land in commemora- 
tion of this it is Hill preferved in the arms of many 
families. 
* 2. O. with about 14 angular and longitudinally ftri- 
ated rays upper valves flat, with rounded rays, which 
are finely flriated tranfverfely ; lower valve with angu- 
lar rays, which are flriated longitudinally. Ears con- 
cave and fmooth on the upper fide. European feas. 
Dorfetfliire, but rare, 
3. O. with 18 flattened rays: ears finely wrinkled 5 
lower valve convex ; rays finely flriated tranfverfely ; 
upper valve flat, with about twice as many angular 
lines as there are rays. American ocean. 
4. O. with 1 6 faint rays with tranfverfe membrana- 
ceous Arise : margin very entire ; valves nearly equal- 
ly flat. Indian ocean. 
5. O. with 20 convex rays; lower valve white 
and very convex ; upper valve white, clouded with 
brown, flatter ar.d plaited. Indian ocean. 
6 . O. equivalve, with 12 doubled rays, and fmooth 
on the outfide ; q 4 inches long, gaping at each end. 
Indian ocean. « 
7. O upper valve fub-convex, with very fine per- 
pendicular lines, eroding very fine, concentric, tranf- 
verfe Arise ; lower valve with 48 rays, and 48 ftriae 
within ; 24 inches long, about the fame breadth. S. 
America. Rare 
8. O. equivalve, a little convex, margined with yel- 
low ; upper valve with faint lines eroding tranfverfe con- 
centric bands, and 48 elevated Arise within 54 inches 
long, about the fame breadth. Guinea and Japan. 
9. O. equivalve, glabrous, with oblong crowded Arise ; mcgellani- 
upper valve more convex, lower flatter than in molt ca. 
others. Straits of Magellan. 
10. O. with 9 or 10 rays; the interflices longilu- hijlrida. 
dinally flriated : margin repand within. Norway feas. 
11. O. nearly equivalve; with 12 convex rays radula. 
croffed by crenated Arise ; 34 inches long, 24 broad. 
Indian ocean. 
1 2. O. equivalve, flattifh, with 9 unequal rays, im- imhricata. 
bricated with feales. Red fea, 
13. O. roundifh with 9 convex chefnut rays ; eaxsfubrotunda 
roundifh, white with a yellowifli border ; i^ inches 
long, 2 broad. 
14. O. nearly equivalve, with 16 convex fmoothifh^/fr# 
rays, and flriated acrofs ; 14 inch long, 1 inch broad. 
India, 
15. O. roundifli with convex rays, outer ones finely crenata. 
flriated longitudinally ; margin deeply crenated ; ears 
tranfverfely flriated. 
16. O. ovate with numerous fine Arise ; margin cr e-jinoujia. 
nated within. * 
17. O. oblong with fcaly rays ; the interflices hxsyAi.-fquamofa. 
er, and marked with perpendicular Arise ; ears wrink- 
led perpendicularly. 
1 8. O. roundifli, with 1 8 rays imbricated with feales ; dubia. 
ears flriated tranfverfely ; 4 inch long. 
* 19.O. with 20 fmooth rays, the interflices irant-fubrufa. 
verfely flriated ; margin crenated ; 2 inches long, and 
the fame breadth. Shores of Britain. 
20. O. flattened, with 1 8 fmooth rays, the interflices verjicolor . 
cancellated. 
21. O. rounded with 5 rays; middle-fized. rofea. 
22. O. brown with flat rays which difappear to -fufee, 
wards the hinge ; lower valve convex, upper fiat. In- 
dian ocean. 
23. O. thin, flat, purple, with very minute perpen- tenuis. 
dicular Arise eroding circular tranfverfe ones ; the Arise 
are elevated within. 
24. O. thin, pale yellow, with thick rays. lutec. 
25. O. roundifn, white, with a mixture of faffron ; muricata. 
the rays convex, and finely and fliarply muricated ; 24 
inches long. 
26. O. roundifh, tawney, dotted with white and black ; confperfa , 
the rays thick. 
27. O. roundifli, brown, with black tranfverfe lines nodulofa . 
and dots ; rays convex and knotty. 
28. O. thin, whitifh, rofy, with white ftripes ; rays radiate . 
convex. 
29. O. oblong, pale yellow, fpotted with white ; punciata. 
beaks varied with white and brown ; rays crenated ; 
2 inches long. 
30 O. roundifh, thin, varied with rofy and whitifh ; aculeate. 
rays thick with aculeate feales. 
31. O. thin, flat, white, with a faffron edge ; rzysplana. 
round and broad. 
32. O. oblong, red, minutely flriated. pufilla. 
33. O, convex on each fide, yellowifh within ; rays Jlavefcens. 
convex. 
34. O. roundifli, deep red, with a 'white hinge and Jlabellum. 
few fpots ; rays fmooth. 
35. O. glabrous, refembling a fpondylus ; but the fpondylou 
ears are equal. des. 
36. 0» 
japonica. 
