90 



ASTARTE (OPIS) TRIOONALIS. FIG. 16. 



Sow. M.C., t. 444. 



"Spec. Char. Cordato-triangular, depressed, transversely 

 sulcated ; beak pointed ; anterior side separated by an angle, 

 smooth."* 



Fig. 16. A. (CpisJ trigonahs Front View. 



Fig. 17, A. fOpisj trigonalis. flack View. 



Proportions: Length, 24 lines ; breadth, 27; depth, 15. 



* Sow, Min, Conch, page 63, vol. v. 



