55 



ARTEMIS CONCENTRICA. 

 Tab. XII. 



SPECIFIC CHARACTER. 



Shell compressed, with fine regular impressed 

 concentric strise ; beaks considerably curved, point- 

 ed ; lunule cordate, slightly impressed ; epidermis 

 brownish yellow, tinged with ferruginous ; hinge with 

 a large oblong fosset under the beaks ; muscular im- 

 pressions very large. 



SYNONYMES. 



Venus concentrica, Gmel. Conch. 7, t. 37, Jig. 



392. 

 Cytherea concentrica, Lam. ^^n. sans vert. vol. 



5, p. 573. 



observations. 



Found abundantly from Virginia to Florida, and in 

 the Gulf of Mexico. It is a beautiful shell, more 

 compressed than any other species, a character which 

 the student will find sufficient to distinguish it. 



