124 ADDITIONS AND CORRECTIONS. 



ZIRPH^EA, Leach. 



Z. dentata, Gabb. 



Z. dentata, Gabb; Pal. Cal., Vol. 2, p. 18, pi. 3, fig. 31 a. 

 Pliocene, KLirker's Pass. 



MACOMA, Leach. 



M. calcarea, Chemn., sp. 



Tellina calcarea, Chemn. ; Conch. Cab., Vol. 6, p. 140, fig. 136. 



T. inconspicua, Brod. and-Sby ; Zool. Jour., Vol. 4, p. 3G3. 



Sanguinolaria Calvfornica, Con. ; Jour. Phil. Acad., 1 Ser., Vol. 7J p. 231, 



pi. 17, f. 11. 

 Tellina lata, Gmel. ; Syst. Nat., p. 3237. 



T. proxima, Brown; Zool. Beechey's Voy., p. 154, pi. 44, fig. 4. 

 T. Pedroana, Con. ; Pacific R. R. Rep., Vol. 5, p. 323, pi. 3, fig. 17. 

 T. sordida, Couth. ; Bost. Jour., Vol. 2, p. 59, pi. 3, fig. 11. 

 T. tenera, Leach ; Appendix to Ross's Voyage. 

 Macoma Pedroana, Gabb ; Vol. 2, p. 94. 

 Mac. inconspicua, Cpr. ; Brit. Assn. Rep., 1863. 

 Circumboreal ; fossil in the Post Pliocene of San Pedro. 



ARCA, Lam. 



A. sulcicosta, Gabb. 



Area sulcicosta, Gabb ; Pal. Cal., Vol. 2, p. 31, pi. 9, fig. 53, 53 a. 

 Pliocene, Mark West Creek, near Sta. Rosa. 



MORRISIA, Davidson. 



M. Hornii, Gabb. 



Morrisia Hornii, Gabb; Proc. Phil. Acad., 1861, p. 371. 

 Id., Gabb; Pal. Cal., Vol. 2, p. 36, pi. 12, fig. 63. 

 Post Pliocene, Sta. Barbara. 



