94 



University of California Publications. 



[Geology 



In Ashley's paper on the "Neocene of the Santa Cruz Moun- 

 tains," he gives the following fauna for presumably the same 

 beds as those Gabb refers to at San Fernando, though he men- 

 tions no areas. He calls it Merced, transitional in the lower part : 



Myurella simplex Carpt. 



For the section from Montara to Capitola, Ashley yives a 

 fauna of fifty-two species, which includes three areas. There is 

 little doubt that Ins .1. microdonta is really A. trilineata. Since he 

 states that "In these strata we find great numbers of several spe- 

 cies of area, some of which are over four inches broad." And 

 after examining a large number of specimens from Capitola I 

 find all these large areas to he A. trilineata. The young individ- 

 uals are identical with A. sulcicosta. Conrad described A. canalis 

 from the same bed with A. trilineata, and the writer has seen 

 specimens from Half Moon Bay. Ashley calls the main bulk of 

 these beds Merced; the lower part, or peeten beds, where Pecten 

 caurinus is very abundant, he calls transition beds, considering 

 them to be in part Miocene. 



Amusium cauriwwm Gld. 

 Cancellaria cf. vetusta Gabb. 

 Calyptraea filosa Gabb. 

 Cardium meekianum Gabb. 

 CMone simillima Sby. 

 Crepidula rogosa Nuttl. 

 Dentalium hexagonum Sby. 

 Dosinia ponder osa Gray. 

 I> n il in torosa Carpt. 

 L ii an I in. leivesii Gld. 

 Macoma nasuta Conr. 



Nassa calif orniana Conr. 

 Ostrea veatchU Gabb. 

 Neptunea humerosa Gabb. 

 Pachypoma gibberosum Chem. 

 Liropeeten estrellanus Conr. 

 Pisania fort is Carpt. 

 Saxidomus gibbosus Gabb. 

 Solen sicarius Gld. 

 Turritella cooperi Carpt. 

 Turritella jewetti Carpt. 

 Venericardia ventricosa Gld. 



MONTARA TO CAPITOLA. (Ashley). 



Astyris gausapata Gld. 

 Calyptraea inomata Gabb. 

 Cancellaria tritonidea Gabb. 

 Chorus belcheri Hinds. 

 Crepidula grandis Midd. 

 Cryptichiton cf. stelleri Midd. 

 I. n nulla leivisii Gld. 

 Nussa cali f orniana Conr. 

 Nassa perpenguis Hds. 

 Natica clausa Brod. and Sby. 

 Chrysodomus humerosus Gabb. 

 Chrysodomus tabulates Baird, 

 "Purpura crispata Chem. 



Purpura saxicola Val. 

 Surcula carpenteriana Gabb. 

 Volutilifhes indurata Conr. 

 Acila castrensis Hinds. 

 Area canalis Conr. 

 Area microdonta Conr. 

 Area sulcicosta Gabb. 

 Cardium corbis Martyn. 

 Cardium meelcianum Gabb. 

 Chione simillima Sby. 

 Cryptomya calif ornica Conr. 

 Cyrena calif ornica Gabb. 

 Glycimeris generosa Gld. 



