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PAET III. 



ADDITIONS TO THE CATALOGUE OF CALIFORNIAN FOSSILS 



OBTAINED SINCE 1888. 



TERTIARY AND QUATERNARY MOLLUSCA. 



A supplementary list is here given of the additions made to the 

 described species of fossils found in the State since 1888. Many others 

 are still undetermined. It has been possible to identify several of the 

 species described by Conrad, which were marked in the Catalogue of 

 1888 as " not identified," fresh specimens of them having been obtained 

 by Dr. Bowers near the original localities. These are named in the 

 following list, but in some cases will probably be found to be synony- 

 mous with species before named: 



1. Arcopagia unda Conr. 



2. Dosinia longula Conr. 



3. Ostrea panzana Conr. 



4. Ostrea suhjecta Conr. 



5. Pecten deserti Conr. 



6. Pecten discus Con. 



7. Pleurotoma transmontana Conr. 



8. Purpura petrosa Conr. 



9. Saxicava abrupta Conr. 

 10. Venus pajaroensis Conr. 



Of these, numbers 1, 2, 3, 4, 6, 7 may prove good species, but the 

 specimens are scarcely good enough to decide as yet. Nos. 8, 9, 10 are 

 probably the species suggested in the Catalogue of 1888. 



In quoting original descriptions and figures the full synonymy is not 

 given, but merely the first author, and one or more later or easily found 

 descriptions or figures, when any such is known. 



Of Cretaceous and Eocene fossils many additional localities have 

 been found, and the list of species occurring in the Santa Ana 

 Mountains of Orange C-ounty was much increased by the collections of 

 Dr. Bowers. Several more species have thus been added to the list of 

 those also found in Northern Mexico, Texas, and more eastern states, 

 showing a connection of the oceans before the Tertiary age. 



