268 WORMS. TESTACEA. 66. Oftrca, 
Inhabits the Mediterranean ,, hi innumerable varieties. 
We// 3f inches long, 3J broad: fometimes whitilli, but 
mixed with 3 fine pale bloom or yellowilh, and marked 
tranfverfe Icmilunar bands; upp€r-<val*ve more elegantly 
ed. with 50-100 rays rough with acute imbricate leales : 
gtn crenate: eats with traniverfc icaly ftriae, the largcf 
emarginatc and Ipinous ; the JJIi is eaten. 
7 riradiata Shell nearly equjvalvc, glabrous, immaculate, with 
minute llrite. 
Mall, Dool, Dan, 2. tah, 60. jig, i, 2. 
, Found among Fuci in the feas of Norway, 
Shell red with fmal! white fpots, within reddiih : upper^V'**'’ 
with 3 rays : ovary of the fi(h yellowilh. 
tuci. Shell nearly equivalvc, ftriate, fpotted, rough, towards ‘ 1 ’® 
margin. * t & j 
Mull. Zool. Dan. 2. tab. 60./. 3 5. 
Inhabits North Seas, on the Fucus faccharinus. 
Shell rufous with whitilh or paler fpots, within red and qU*'* 
Imooth with pellucid fppts; rays of the ppper- valve obfol^^^ 
ovary of the filh rich red. 
Tigerinae Shell nearly equiyalve, ftriate, glabrous, red with 
fpots. 
Mull. Zool. Dan. 2. tab. G. fig. 6 — 8. 
Inhabits the North Seas, on Fuci ; lower-valve more de^P J 
grooved, and varied with large undulate cofluent pale yef®' 
Ipots ; uppei-valve dotted.' ovary of the filh white. 
Sepiemradi- 
ata. 
Shell nearly cquiva've, ftriate, glabrous, with 7 convex 
Inhabits Nerttoern Seas, Mull, Zool. Dan. predr. 2^^2* 
Arata, 
Shcil nearly equivalve, within and without grooved 
red ; one part rough, the other glabrous. 
Inhabits North Sests, Mull, Zool. Dwt. prodr. 2^^^, 
^enttforiai.\ 
Shell convex each fide with 22 rounded and tranfve’'® 
wrinkled rays, the fnterftices with longitudinal 
late ftiiae. 
Hegcnf. conch, i. tab. 3. 36 ? 
C.hcmn. conch. 7. tab. 65, fig. 617. 
Inhabits the Indian Ocean-, 2 inches 9 lines long, and abouf * 
much broad; outlide chefnut varied with violet and wl’'^ * 
inCde violet, the circumfetencc bordered with dull bay* 
