WORMS. TESTACEA. 66. Oftrea. 
275 
Born Muf. C 4 . Vind. left, tab, 6. f. <), 10. 
Chemn. conch. 8. tab. 672. 073 * 
3. Martin allg. NaturJ. 4. tab. 4 °»y' 3 » 4 * 
4. Chemn. conch, 8. tab. 71, /. ooo I 
5. Chemn. conch. 8. tab. 71. f. 061. 
6. conch. 9. 1 1°. / to rocks or in large 
Inhabits European tl.^abk and nutritious 
Serptl^rLepadw, Sertularis and other marine produftions. 
Shell oval, nightly eared, fmooth, with an oblique bafe. 
Gualt, test. tab. 84. /ig- , f. e 
Schreet. einl. in conch. 3. /'f', t v j ti broad ; 
valve convex and ending in a Deaa. ^ 5 
hollows. 
Shell oval with longitudinal filiform ridges: infide green. 
Donovan' sBritiJhJhelU, ii. tab. 
Da Cojia Brit, conch, tab. 11, /ig‘ 4 * 
Li/ter An, Ang. tab. 4. /'«• 4 ' 
Gualt. conch, tab. \o/^, fig' ot . , . 
Inhabits European feat ; about an ,„ch j;; ,3 
Shell thick, ftrong, nearly opake, not membran 
the hinge, formed by the cartilage of the filh. 
Shell rough, oblong, linear, with divergent hinges vaulted 
internally. , 
gated acutangular beak. 
"'“•A Shell rough, 
valve larger, concave and ending in a bealc, witn 
obtufe plaits. 
Chemn conch. %. tab. 72, fig. little narrower; 
luh2bh. Chine/e Jhores; 4 1 ' hbef 
(hell ruifet-brown, within wbitiih towards the hing , 
Mm 2 . 
