CIRCE, Schum.
S. G. Lioconcha, Morch.
C. (L.) Newcombiana, G.
C. t. tenui, trigono-ventricosa, polita, minute et concentrice striata; apicibus magnis, subcentralibus; lunula haud profunda, cordata, margine arata; colore gilvo, lineis angulatis, rufis pieto; intus pallida.
Long. 1·2, lat. 1·37, alt. ·45.
Shell thin, trigonally ventricose, polished, marked by minute concentric striæ; beaks large, subcentral; anterior end prominent, narrowly rounded, posterior a little the widest, base convex; lunule not excavated, bounded by an impressed line; color yellowish white, variously lined with brown angular lines; interior whitish; internal margin smooth; hinge teeth delicate.
Hab. two valves, Catalina Island, 120 fms. Dr. Cooper.
No. 1058, Mollusca, Survey Cabinet.
The relative length and width of the two specimens is different, the smaller specimen not being so convex at the base as the one measured.