Descriptive Catalogue of the British Testacea. 95 
For want of attention to the distinction here pointed 
. out by Linnzus, this species has ienaentiy been mis- 
taken for Arca Glycymeris. Fo 
— A. pilosa is not uncommon on the Waite coast of 
England. It was first figured by Lister. - 
Nucleus. A. testa oblique ovata, lzeviuscula; cardine triangulari. 
Linn. Syst. Nat. p. 1140. Linn. Gmel. p. 3314. 
Petiver Gaz. t. 17. f. 9. 
Pennant Brit. Zool. 4. n. 58. 
Da Costa Brit. Conch. p. 110. t. 15. f. 6. dextra. Glycy- 
meris argentea. 
Chemn. Conch. 7. t. 58. f. 514. 
Pulteney in Hutch. Dorset. p. 35. t. 12. f. di 
Donovan Brit. Shells, t. 63. 
Ec Montagu Test. Brit. p. 141. TI. 
. Habitat in mari, frequens. * 
* Testa diametro 4 poll. alba, sub epidermide olivacea, striis longitudinali- 
* bus subtilissimis, rugis paucis transversis. | Umbones acuti, incurvi. . 
Intus argentea. Margo internus subtilissime crenulatus, Cardo arcua- 
m denticulis numerosis, 
Lim. Sy. Nat. n. ` 313. 
Toc VERA ee 
Cardo edentulus, fossula cava a ovata, Mif ine lireralibus transversis, 
SDissitailic: in habit as we must acknowledge the species of 
this genus to be, they are for the most part aptly included under 
the Linnean character; and unless we deviate from. the rules of 
that 
