Some Notes 07i the Teritiary Fossils of California. 8^ 



indurated sandstone was passed through, in which was found 

 casts of various shells, together with a few well preserved fossil 

 shells. 



At a greater depth, from 140 to 160 feet, came a rich variety of 

 well preserved shells imbedded in a usually rather soft matrix, 

 composed of loosely aggregated grains of sand or fine sandy mud, 

 occasionally hardened by infiltration of lime-bearing water. 



The following is a list of the species obtained from this well by 

 Mr. Hemphill, as they were identified and published in the Pro- 

 ceedings of the California Academy of Sciences, Vol. V, pp. 

 296-299, 1874, by William H. Dall. 



Glottidia albida, Hinds. 



Xylotrya sp. indet. (Tubes only.) 



Cryptomya Californica, Conr. 



Dentalium hexagonum, Sby. 



" semipolitum, B. and S. 



Solen rosaceus, Cpr. 



Solecurtus Californianus, Conr. 



Myurella simplex, Cpr. 



Macoma expansa, Cpr 



Callista sp. indet (smooth, thin and inflated. Much like C. 

 Newcombiana.) 



Cardium centifilosum, Cpr. 



Venericardia. borealis, Conr. 



Lucina Nuttallii, Conr. 

 " borealis, L. 

 " tenuisculpta, Cpr. 



Cryptodon flexuosus, Mont. 



Modiola recta, Conr. 



Area microdonta, Conr. 



Nucula sp. n. Cpr. (like N. tenuis.) 



Acila Lyalli, Baird (fre(iuently reported as A. castrensis, 

 Hds.) 



Leda caelata, Hds 



Pecten hastatus, Sby. 



Amusium caurinum, Gld. 



Janira florida, Hds. 



Ostrea conchaphila, Cpr. 



Placunanomia macroschisma, Desh. 



Tornatina eximia, Baird. 



Cylichna cylindracea, L. 



Siphonodentalium pusillum ? Gabb. 



Calliostoma annulatum Martyn. 



Galerus filosus. Gabb. 



Crepidula navicelloides, Nutt. 



" princeps, Conr. (not C. grandis of Midd.) 



Turritella Jewettii, Cpr. 



Bittium asperum, Cpr. 



