184 



TRIVIAL NAMES. 



Costatum 



White-fluted Heart. 



Cardissa 



Venus Heart. 



Hemicardium 



Ditto with smooth edge. 



Aculeatum 



Knotted H. j Ox H. 



Echinatum 



Rake H. Shell. 



Isocardia 



Rasp Cockle. 



Edule 



Common Do. 



Fragum 



White Strawberry Do. 



iEolicum 



Janus. 



Unedo 



Strawberry Do. 



Magnum 



Yellow, ribbed Do. 



Retusum 



Diana Heart. 



Rusticum 



Bear's Paw; Tufted H. 



Mactra 



Mactra. 



Lutraria 



Large M. 



DONAX 



Wedge Shell. 



Scortum 



Beaked W. 



Trunculus 



Yellow Do. 



Faba 



Bean-shaped Do. 



Irus 



Foliated Do. 



Venus 



Venus Shell. 



Dione 



Prickly-mouthed V. 



Paphia 



Oldwoman ; wrinkled V, 



