Publications of Scientific Societies. 129 



On an extinct whale from California; by E. D. Cope. Proe. 

 Phila. Acad. Nat. Sci., vol. 24, 1872, pp. 29-30. 



Remarks on extinct mammals from California; by Joseph 

 Leidy. Proc. Phila. Acad. Nat. Sci., vol. 25, 1873, p. 259. 



Extract of a letter relating to mammalian fossils in California ; 



by Dr. L. G. Yates. Proc. Phila. Acad. Nat. Sci., vol. 26, 



1874, pp. 18-21. 



This paper gives a list of localities — fossil elephas, and fossil 

 mastodon. 



The blue gravel of California; by E. Goldsmith. Proc. Phila. 

 Acad. Nat. Sci., vol. 26, 1874, pp. 73-74. 



Descriptions of new fossil shells from the Tertiary of Cali- 

 fornia; by R. E. C. Stearns. Proc. Phila. Acad. Nat. 

 Sci., vol. 27, 1875, pp. 463-464, pi. 27. 



Opalia varicostata, n.sp. ; O. anomala, n.sp. 



On Itacolmnite from Mariposa County; by W. P. Blake. 

 Proc. Phila. Acad. Nat. Sci., vol. 28, 1876, pp. 325-326. 



Note on a Cerripede of the California iMiocene, with remarks 

 on fossil shell ; by T. A. Conrad. Proc. Phila. Acad. Nat. 

 Sci., vol. 28, 1876, pp. 273-275. 



The author refers Tamiosma gregaria, Conrad, to the genus 

 Balanus. 



On the occurrence of Ammonites in deposits of the Tertiary 

 age; by A. Heilprin. Proc. Phila. Acad. Nat. Sci., vol. 

 34, 1882, p. 94. 



On the age of the Tejon rocks of California and the occurrence 

 of Ammonitic remains in Tertiary deposits ; by A. Heil- 

 prin. Proc. Phila. Acad. Nat. Sci., vol. 34, 1882, pp. 

 196-214. 



The author remarks (p. 213) that the rocks of the Tejon group 

 (Cretaceous, Div. B, of the California Survey), despite their com- 

 prising, in their contained faunas, a limited number of forms from 

 the subjacent (Cretaceous) deposits, and a few undoubted repre- 

 sentatives of the Ammonitidae, are of Tertiary (Eocene) age. 



The Eocene age of the Tejon rocks is also maintained by Prof. 

 Jules Marcou, who made a personal examination of the region. 

 (Rept. Chief Engineers, 1876, p. 387.) 



