Fmk. 1846.] 2T 



rounded ; umbo compressed ; color white, with irregular brovrn opots aonis- 

 what iu ray-like series. Length 1 inch. Breadth | inch. 

 LncaXUy Mullet Key, Tampa Bay. 



Dkntauum. 



Dentalium cboreum. Curved above, inclining to be straight interiorly, 

 thin, translucent, very slender, very gradually tapering to a very acute apex ; 

 white, without lines, highly polished. Length | inch. 



Locality. Southern coast of Florida. 



Dr. Morton offered the following, which was adopted : 

 Hemlved, That the 8th Vol. of the Journal of the Aeadeoi y 

 be presented to M. D'Orbigny, of Paris, 



