BIVALVES ANOMIA. 67 



that it is frequently used by the ingenious Chinese, as 

 a substitute for window-glass. 



The A. sanguinea, A. rosea, A. psittacea, and most of 

 the second division are extremely rare. 



The European, Indian, American, and African oceans 

 supply many species of the Anomia, as also do the Me- 

 diterranean and Northern seas. 



This genus has probably been termed 'Avof.iia (Ano- 

 mia), from its not possessing any determinate character. 



Division I. — Lower valve flat and perforated. 



Scientific Name. Locality. Common Name. 



Craniolaris Philippine Isles Cranium Anomia 



Turbinata Norway Top shaped do • • 



Ephippium China, Britain, Mediter- 

 ranean Orbicular- • do •♦ 



Cepa South Seas,France, Africa, 



Britain Onion do • • 



Electrica France, Mediterranean, 



Africa Small amber do • • 



Punctata Ferroe Islands Dotted do • • 



Aculeata Norway, Britain Prickly valved do 



Muricata Guinea Muricated- do • • 



Undulata Britain, Norway, Mediter- 

 ranean Striated • • do • • 



Patelliformis' • • • • Norway Limpet shap'd do 



Squama Ditto Scaly • • • • do - • 



Bifida Mauritius, Mediterranean Bifid do • • 



Cylindrica Norway, Britain Cylindrical do • • 



Division II. — Having the umbo perforated, and generally a cartila- 

 ginous substance in the interior of the shell. 



Scobinata Mediterranean Rough •••• do • 



Aurita Eared • • • do • 



Retusa Norway Blunt do • 



Truncata Ditto, Mediterranean • • • • Truncated do • 



Capensis Cape of Good Hope Cape do • 



F2 



