76 PALAEONTOLOGY OF CALIFORNIA. 



ANCILLARIA, Lam. A. Fishii, Gabb. 



A. Fishii, Gabb; Pal. Cal., Vol. 2, p. 9, pi. 2, fig. 15. 

 Miocene, Martinez. 



VOLTJTILITHES, Swains. "V. indurata," Con. 



Rostellaria indurata, Con.; Wilkes's Exped., p. 727, pi. 19, fig. 12. 



Volutilithcs id., Con.; Jour. Conch., 1865, p. 151. 



Miocene, Oregon, Tomales Bay, Cal. ; Pliocene, Half-Moon Bay. 



This shell is found occasionally, though rarely. I have seen several speci- 

 mens, but never in a sufficiently good condition to determine fully its generic 

 relations. That it is not a Rostellaria, nor in fact one of the Strombidce, is 

 sufficiently evident from its form. I have never been able to detect even 

 the rudiments of folds on its columella, which fact, together with its non- 

 cancellate surface, carry it out of the other genus in which Mr. Conrad has 

 placed it. It will probably be found, when we obtain better specimens, to 

 belong to the Fusince. 



COLUMBELLA, Lam. C. (Alia) Eichthofeni, Gabb. 



C. (Alia) Eichthofeni, Gabb ; Pal. Cal., Vol. 2, p. 10, pi 2, fig. 16. 

 Pliocene, Russ. R., San Fernando, and San Francisco. 



AMYCLA, II. & A. Ad. A. gausapata, Gld. sp. 



Columbeila gausapata, Gld. ; Proc. Bost. N. H. Soc, 1850, p. 170. 



Id., Gld. ; Wilkes's Exped., p. 267, pi. 19, fig. 337. ' 



Amycla id., Cpr. ; Brit. Assn. Rep., 1863, p. 662. 



Nassa Pedroana, Con.; P. R. R. Rep., Vol. 5, p. 327, pi. 6, fig. 48. 



Post-Pliocene, Santa Barbara, San Pedro. Living. 



A. CARINATA, Hds. Sp. 



Columbeila carinata, Hds. ; Voy. Sulphur, p. 39, pi 10, fig. 15, 16. 

 Columbeila carinata, Cpr.; ("perhaps Amycla,") Br. A. Rep. 1863, p. 662. 

 Post-Pliocene, Santa Barbara. Living. 



MARGINELLA, Lam. M. Jewetti, Cpr. 



M. Jewetti, Cpr. ; P. Zool. Soc, 1856, p. 207. 

 Post-Pliocene, San Pedro. Living. 



