CIRCE, 



429 



the lunule is distinct, with smooth margins. The hinge 

 is composed of three primary teeth and a lateral lamina 

 in each valve ; the ligament is external and linear ; the 

 muscular impressions are roundish or oblong, and there 

 is hardly any trace of sinuation in the pallia! line. 



Species of Circe. 



abbreviata, Lam. 

 aequivoca, Ghent. 

 albida, Desk. 

 Arabica, Chem. 

 Artemis, Desk. 

 australis, Sow. 

 callipyga, Bom. 

 corrugata, Chem. 

 Cracherodii, Gray. 

 crocea, Gray. 

 dispar, Chem. 

 divaricata, Chem. 

 elegans, Sow. 

 Gibbia, Lam. 

 lenticularis, Desk. 



lentiginosa, Chem. 

 margarita, Cpr. 

 nummulina, Lam. 

 oblonga, Desh. 

 pectiuata, Linn. 

 personata, Lam. 

 plauata, Gray. 

 rivularis, Born. 

 scripta, Linn. 

 Stutzeri, Donov. 

 subtrigona, Cpr. 

 sulcata, Gray. 

 transversaria, Desh. 

 tumefacta, Soiv. 



Sub-gen. lioconcha, Morch. 

 Shell sub-trigonal, turgid, smooth, shining; beaks cordate. 



castrensis, Linn. 

 fastigiata, Sow. 

 hebrsea, Sow. 

 implexa, Martyn. 



minor, Desh. 

 ornata, Dillw. 

 polita, Bom. 

 trimaculata, Lam. 



VOL. II. 



3 K 



