PROCEEDINGS 



OF THH 



CALIFORNIA ACADEMY OF SCIENCES 



Fourth Series 



Vol. X, No. 8, pp. 53-70, pis. 4-6 August 11, 1920 



VIII 



NOTES ON SOME UNDESCRIBED CALIFORNIAN 



HELICES 



BY 

 S. STILLMAN BERRY 



Gradually accumulating material of the larger land snails 

 of the Californian area enables the reeegnition. as so notorious 

 in the case of the birds and mammals, of a considerable number 

 of more or less strongly marked geographical races, descrip- 

 tions of some of the more interesting of which are offered 

 herewith. This paper is therefore to be taken as complementary 

 to one published by the same writer in the University of Cali- 

 fornia publications of a few years ago (Berry, :16). Unfor- 

 tunately the earlier paper was not illustrated, as the figures pre- 

 pared for it proved unsatisfactory for reproduction. The op- 

 portunity is now taken, at least in part, to make good the 

 deficiency. 



The writer's thanks are due to the various collectors here- 

 after mentioned who have so generously aided him by supply- 

 ing specimens, as well as to Mr. John Howard Paine for the 

 remarkable photomicrographs w^hich constitute two of the 

 plates. 



August 11, 1920 



