ANOMIA. 287 



Test. p. 156 and p. 581. Maton and Racket, in Lin. 

 Trans, viii. p. 103. Dorset Cat. p. 39- t. 13. f. 4. 

 Enc. Method. 1. 171. f. 6 and 7. 



Inhabits the Mediterranean and coasts of America. Linnaus. 

 Great Britain. Pennant, fyc. Brittany and Languedoc. 

 Brnguiere. China. Humphreys. 



Shell generally about two inches, but sometimes three inches 

 and a half in diameter, and adheres by its flat valve to other 

 bodies, particularly oyster shells, and accommodates its form 

 to whatever it fixes on; the colour is reddish, yellowish, or 

 white, and the inside pearly, tinged with green or purple. 

 Bruguiere says, these shells have a small testaceous covering 

 for the perforation, which is in fact a third valve, and which 

 is fixed so firmly to whatever it adheres to, as to be hardly 

 separable, and is therefore rarely seen in cabinets. Mr. 

 Montagu, in his Appendix, says, that A. Cepa is a Variety, 

 and A. squamida, nothing more than the young of this 

 species. 



cepa. 4. Shell ob-ovate, violet, with the flat valve 

 perforated, and the other only slightly 

 wrinkled. 



Anomia Cepa. Linnaus Syst. Nat. p. 1151. Born Mus. 



p. 117- Chemnitz, viii. p. 85. t. 76. f. 694 and 695. 



Schroeter Einl. iii. p. 384. Gmelin, p. 3341. Poll 



Test. ii. p. 182. t. 30. f. 1 to 8. 

 Anomia violacea. Bruguiere Enc. Meth. p. 71. 

 Anomia Cepa, Var. rosea. Solander's MSS. Dorset Cat. 



p. 39- 

 Knorr, vi. t. 9. f. 5. Enc. Method, t. 171. f. 1 and 2. 

 Inhabits the Mediterranean. Linnaus. Coasts of Britain. 

 Pulteney, §c. Provence and Languedoc. Bruguiere. West 

 India Islands, and Africa. Chemnitz. South Seas. Hum- 

 phreys. 

 This shell is generally smaller, more ovate, much less strongly 

 wrinkled, and more highly coloured than A. Ephippium, 

 but they are both so very variable, and run so much into 

 each other, that it is probably nothing more than a Variety ; 

 the convex upper valve is generally of a violet colour, but is 

 sometimes purple or yellow, and not unfrequently appears as 

 if bronzed ; the inside is nearly white, and the lower valve 

 mostly whitish. 



electrica. 5. Shell sub-orbicular, yellowish, 

 smooth, with the convex valve gibbous, 



