TERTIARY FOSSILS. 83 



PACHYPOMA, Gray. P. biangulata, Gabb. 



P. biangulata, Gabb; Pal. Cal., Vol. 2, p. 15, pi. 3, fig. 26. 

 Miocene, Martinez. 



P. gibberostjm, Chemn , sp. 



Trochus gibberosus, Chemn. ; Conch. Cab., Vol. 10, p. 278, vignette 23. 



T. inequalis, Gmel. ; (not Martyn), p. 3585. 



T. ochraceus, Phil. ; Zeits. f. Mai., 1846, p. 101. 



Pachypoma gibberosum, Cpr. ; Brit. Assn. Rep., 1863, p. 651. 



Post-Pliocene, San Pedro. Living. 



POMAULAX, Gray. P. undosus, Wood, sp. 



Trochus undosus, Wood; Suppl., p. 16, pi. 5, fig. 1. 

 T. baloznarum, Val. ; Voy. Venus, pi. 3, fig. 1. 

 Pomaulax undosus, Cpr. ; B. A. Rep., 1863, p. 651. 

 Post-Pliocene, San Pedro and San Diego. Living. 



CALLIOSTOMA, Swains. O. annulatum, Mart., sp. 



Trochus annulatus, Mart. ; Univ. Conch., Vol. 1, fig. 33. 

 Zizyphinus annulatus, A. Ad. ; Zool. Proc, 1851, p. 164. 

 Zizyphinus annulatus, Gray ; Dieflenbach's N. Zealand, p. 237, No. 72. 

 Calliostoma annulatum, Cpr. ; Brit-. Assn. Rep., p. 652. 

 Post-Pliocene, San Pedro. Living. 



C. costatum, Mart., sp. 



Trochus costatus, Mart. ; Univ. Conch., pi. 10, fig. 3. 

 Calliostoma costatum, Cpr. ; Brit. Assn. Rep., p. 652. 

 Pliocene, San Fernando; Post-Pliocene, San Pedro. Living. 



C. CANALICULATUM, Mart., sp. 



Trochus canaliculars, Mart. ; Univ. Conch., Vol. 1, fig. 32. 

 Zizyphinus canaliculars, Gray : Travels in New Zealand, p. 237. 

 Calliostoma canaliculatum, Cpr. ; Brit. Assn. Rep., p. 652. 

 Post-Pliocene, San Pedro. Living. 



