88 PALEONTOLOGY OF CALIFORNIA. 



TORNATINA, A. Ad. T. culcitella, Gld., sp. 



Bulla (Akera) culcitella, Gld. ; Mex. & Cal. Shells, p. 14, pi. 14, fig. 8. 

 Tornatina culcitella, Cpr. ; Proc. Zool. Soc, Lond., 1856, p. 227. 

 Post-Pliocene, Santa Barbara. Living. 



Besides the above Marine Univalves, several Helices have been found in a 

 fossil state, usually in isolated deposits of doubtful age. The following are 

 mentioned in ray memoranda : 



H. Mormonum, Pfr. 



Pliocene, with human skull, near Angels' Camp, Calaveras County. 



H. tudiculala, Binney. 



Post-Pliocene, Marine deposits of San Pedro. 



H. Hillebrandi, Newc. 



Near Mariposa. 



H. Tryoni and H. facta, Newc. ; curious varieties from the islands off" the 

 southern coast. The former is thick and, in some cases, subangulated ; the 

 latter is much larger than the living forms, and very solid. 



ACEPHALA. 



ZIRPHJEA, Leach. Z. Gabbii, Tryon. 



Z. Gabbii, Tryon; Proc. Phil. Acad. Nat. Sci., 1866, p. 144, pi. 1, fig. 1. 

 Z. Gabbii, Gabb ; Pal. Cal., Vol. 2, p. 52, pi. 15, fig. 10. 

 Z. crispata, Cpr., Coop., Auct. {non Linn.). 

 Post-Pliocene, San Pedro. Living. 



PENITELLA, Val. P. penita, Con., sp. 



Pholas penita, Con. ; Jour. A. N. S., 1 Ser., Vol. 7, p. 237, pi. 18, fig. 7. 



Penitella Conradi, Val.; Voy. Venus, pi. 24, fig. 1. 



Par apholas penita, Cpr. ; Zool. Proc, 1856, p. 210. 



Pholadidea penita. Cpr. ; Brit. Assn. Bep. 



Penitella spelcea, Con. ; P. R. B. Bep., Vol. 5, p. 326, pi. 5, fig. 43. 



Penitella penita, Tryon ; Proc. Phil. A. N. S., 1861, Monog. Pholad., p. 87. 



Post-Pliocene, Santa Barbara. Living. 



SOLEN, Linn. S. rosaceus, Cpr. 



Solen ? var. rosaceus, Cpr. ; Brit. Assn. Rep., W. C. Moll., 1863, p. 638. 

 Pliocene, San Fernando, Santa Bosa. Living. 



