96 PALAEONTOLOGY OF CALIFORNIA. 



PSEPHIS, Cpr. P. tantilla, Gld., sp. 



Venus tantillus, Gld. ; Shells of Cal. and Mex., p. 33, pi. 15, fig. 10. 

 Trigona tantilla, Cpr. ; Proc. Zool. Soc, 1856, p. 201. 

 Venus rhysomia, Gabb ; Proc. Phil. Acad., 1861, p. 371. 

 Psejjhis tantilla, Cpr. ; Eep. W. C. Moll., 1863, p. 640. 

 Post-Pliocene, Santa Barbara. Living. 



P. Lordi, Baird, sp. 



Chione Lordi, Baird ; Proc. Zool. Soc, 1863, p. 69. 

 Psejihis Lordi, Cpr. ; Ptep. W. C. Moll., 1863, p. 641. 

 Post-Pliocene, Santa Barbara. Living. 



PACHYDESMA, Con. P. crassatelloides, Con. 



Cytherea (Trigonella) crassatelloides, Con. ; Jour. Phil. Acad., Vol. 7, p. 253, 



pi. 19, fig. 17. 

 Trigona crassatelloides, Desh. ; Cat. Ven., p. 46. 

 Pachydesma crassatelloides, Con. ; Proc. Phil. Acad., 1854, p. 121. 

 Donax stuliorum, Mawe ; Conch., pi. 9, fig. 7. 



Trigona stultorum, Gray, Analyst ; and Hanley ; Sp. Shells, p. 105. 

 Cytherea solidissima, Phil. ; Zeits. fur. Mai., 1851, p. 74, No. 100. 

 Post-Pliocene, San Diego. Living. 



CALLISTA, Poli. C. (? Tapes) Voyi, Gabb. 



Callista Voyi, Gabb ; Pal. Cal., Vol. 2, p. 24, pi. 5, fig. 41. 

 Pliocene, Eagle Prairie, Humboldt County. 



LI0C0NCHA, Miirch. L. Newcombiana, Gabb. 



Lioconcha Newcombiana, Gabb; Proc. Cal. Acad., 1865. 

 Post-Pliocene, San Diego. Living. 



AMIANTIS, Cpr. A. callosa, Con., sp. 



Cytherea callosa, Con. ; Jour. Acad., Vol. 7, p. 252. 

 I ius callosa, Sby. ; Thes. Conch., Vol. 2, p. 712, pi. 154, fig. 44, 45. 

 Dosinia callosa, Cpr. ; Zool. Proc, 1856, p. 216. 

 Amiantis callosa, Cpr. ; Eep. W. C. Moll., Brit. Assn., p. 640. 

 Post- Pliocene, Santa Barbara. Living. 



