Vol. VIII] EVERMANN— DIRECTOR'S REPORT FOR 1918 337 



San Benito 7 specimens 



San Francisco 1 



San Mateo 3 



Santa Barbara 1 



Santa Clara 6 



Shasta 32 



Siskiyou 19 



Specimens from other localities are : 



Idaho 488 specimens 



Nevada 12 " 



New York 163 



Oregon 580 



Utah 2 



Australia 20 



China 1 " 



Hawaii 87 



Japan 1 " 



Philippine Islands 2 " 



The classification and arrangement of the collection was continued dur- 

 ing the early part of the year. 



Considerable research work has been accomplished during the year and 

 a detailed study of the garter-snakes of the states west of the Rocky Moun- 

 tains has been published. 



It is hoped that during the coming year the work of the department may 

 be carried on without interruptions and that field work may be continued 

 for a longer period. 



Department of Invertebrate Paleontology 

 By Roy E. Dickerson, Curator 



The principal activities of the Department of Paleontology during the 

 past year have been devoted to finishing some work in the Petaluma, 

 Sonoma, and Tomales Quadrangles, photographing new species from Car- 

 rizo Creek, San Diego County, completing the numbering and arranging of 

 the Henry Hemphill Conchological Collection, increasing the Academy 

 collection of types and cotypes through exchange, and the procuring of 

 many collections of recent and fossil shells. Mr. Georges Vorbe and Mr. 

 MJerle Israelsky have been valuable assistants during the past year. 



The Academy published in the year a paper by Professor E. T. Dumble 

 upon the "Geology of the Northern End of the Tampico Embayment Area." 

 Most of the determinations of fossils listed in this paper were made by 

 Dr. W. S. W. Kew and the curator. 



The mapping of the Tertiary formations of the Petaluma Quadrangle and 

 the south half of the Santa Rosa Quadrangle, was completed by the curator 

 during the spring. Incidental to this work, the curator cooperated with the 



