486 



ASTARTIDjE. 



Species of Crassatella. 



Antillarum, Reeve. 

 bellula, A. Adams. 

 castanea, Reeve. 

 cornpressa, Adams and Reeve. 

 compta, A. Adams. 

 concinna, A. Adams. 

 corbuloides, Reeve. 

 corrugata, Adams and Reeve. 

 Oumingii, A. Adams. 

 decipiens, Reeve. 

 divaricata, Ohem. 

 donacina, Lam. 

 gibbosa, Sow. 

 jubar, Reeve. 

 Kingicola, Lam. 

 lrevis, A. Adams. 



lapidea, Reeve. 

 nana, Adams and Reeve. 

 obscura, A. Adams. 

 ornata, Gray. 

 pallida, Adams and Reeve. 

 picta, Adams and Reeve. 

 pulcbra, Reeve. 

 radiata, Sow. 

 rostrata, Lam. 

 speciosa, A. Adams. 

 subradiata, Lam. 

 sulcata, Lam. 

 triquetra, Reeve. 

 truucata, A. Adams. 

 vmdulata, Sow. 

 zic-zac, Reeve. 



Genus ACTINOBOLFS, Klein. 



Foot sickle-shaped, not byssiferous. 



Shell equivalve, inequilateral, ovate or cordate ; surface of 

 valves with strong radiating ribs. Hinge with two oblique 

 cardinal teeth directed towards the same side, hinder car- 

 dinal tooth in left valve triangular, single, elongate; lateral 

 teeth none. 



Syn. Cardita, Lam., not Bray. Cardiocardites, Blainv. 

 Agaria, Gray. 



Ex. A. sulcatus, Lamarck, pi. 110, fig. 2. Shell, A. 

 ajar, Adanson, fig. 2, a, 2, b. 



The genus Venericardia, as properly restricted, is en- 

 tirely extinct, the species referred to that genus by Lamarck 

 (V. antiquata) belonging to the Actinobolus of Klein. 



