TAPES. 



435 



smooth, and the beaks are not prominent. The hinge is 

 composed of three slightly-diverging primary teeth (two 

 of which are usually bifid) in each valve, and a ridge 

 bounding the groove for the ligament, which is external ; 

 the pallial sinus is deep, oblong, and rounded at the ex- 

 tremity. Norway, Britain, the Black Sea, Senegal, Brazil, 

 India, China, and New Zealand are the countries given 

 as localities for the species of this genus, which ranges 

 from low-water to one hundred fathoms. They bury in 

 the sand, or conceal themselves in fissures of the rocks 

 and among the roots of sea-weed. 



Species of Tapes. 



acuminata, Sow. 

 adspersa, Chem. 

 alba, Desk. 

 aranea, Phil. 

 aurea, Gmel. 

 Belcheri, Sow. 

 biradiata, Desh. 

 castrensis, Desh. 

 crassisulca, Desh. 

 Deshayesii, Hanlcy. 

 dura, Gmel. 

 florida, Lam. 

 floridella, Desh. 

 fluctuosa, Gould. 

 grata, Desh. 

 incerta, Soiv. 

 literata, Humph. 

 Luzonica, Sow. 

 obscurata, Desh. 



perplexa, Sow. 

 petalina, Lam. 

 phaseolina, Desh. 

 polita, Sow. 

 quadriradiata, Desh. 

 Radatzi, DJcr. 

 radiata, Chem. 

 retifera, Lam. 

 rotundata, Linn. 

 similis, Desh. 

 squamosa, Cpr. 

 sulcaria, Lam. 

 tenuistriata, So^o. 

 textrix, Chem. 

 texturata, Lam. 

 turgida, Lam. 

 turgidula, Desh. 

 undulata, Born. 

 virginea, Linn. 



