28i 
WORMS. TESTACEA. 67. Anomia. 
* 
X', 
’“‘la. 
Inhabits European and American Seal, and is frequently found 
flicking to the comtnon oyfter j about z inches long, zl broad; 
the outflde rugged and filmy, the infide fmooth and pearly; 
varies much in colours, but all have generally a filvery hue. 
Shell obovate unequal violet ; upper valve convex, lower 
perforated. 
Knorr. Vergn, 6. tah. i)-fig, J. 
Murray tefiaceel. tab, 2.?ig, 13. . 
Chemn. conch, 8. tab, 76, fig. 694, bpS* 
Inhabits European and Ametican Seas ; about the fize of a walnut; 
varies in it’s ftiape; lower-valve white, upper-valve reddilh- 
blue: refembles the laft but is much lels and fmoother. 
Shell roundifh yellow fmooth ; one valve convex and gibbous. 
Earbut. tab. t),fig. 4. Rumpf, Mu/, tab. 47. L. 
Lifier, tab. 20 ^. fg. 39? Petinj. amb. t. 20. f. 8, 
Knorr P'trgn. 5. tab. 2^. fig. 6. 
Chemn. conch, 8. tab, 76. fig, 691. 
Inhabits Coatts of Africa-, refembles the laft. 
Shell fmall brittle extremely thin ; lower-valve flatter with an 
oval perforation and a fmall knob in the region of the hinge. 
Shell fmall orbicular, very entire, thin like the fcale of a 
fifli ; one margin gibbous and fmooth. 
Pennant Brit. Zaol. iv. p. 109. n. 71. 
Chemn condo. 8, tab. jbs.fig. 096. 
Pound frequently in the European Seas, adhering tooyfters crabs 
and other filh : /zr// minute flat delicate and filvery, one valve 
gCBcrally perforated. 
Shell ovate convex fubdiaphanous ftriate, the pofterior beak 
recurved and fmooth. 
Inhabits Nartb Sieas. Mull. Zool. Dan. prodr, 2999.- 
'^W/whitilh thin brittle, refembling Patella lutea; marked with 
very fine longitudinal ftriae crofled by tranfverfe ones : beak 
obfolcte: lower-val--ce flat fmooth and perforated at the bafe. 
^hell roundifh, fmooth and rough within ; the beak per- 
* foratecl. 
Cualt. teJI. tab. 96. Af- A. 
^.hemn, conch, 8. tab. 7 ^- fig. 7°4 ^ 
Schreet, Journ, 3. tab. 2. fig, 4. 
^chreet, EinL in conch. 3. tab. 9. fig. 9, 
Inhabits the Ocean : thin pellucid white, very finely ftriate, fil- 
very within ; the outer margin glabrous and acute- 
VOL. IV.— N n 
Aurita, 
