PROCEEDINGS 



OF THE 



CALIFORNIA ACADEMY OF SCIENCES 



Fourth Series 



Vol. II, Pt. I, No. 11, pp. 375-382. December 31, 1917 



EXPEDITION OF THE CALIFORNIA ACADEMY OF 



SCIENCES TO THE GALAPAGOS 



ISLANDS, 1905-1906 



XI 



PRELIMINARY DESCRIPTIONS OF NEW SPECIES 

 OF PULMONATA OF THE GALAPAGOS ISLANDS 



BY WILLIAM HEALEY BALL 



A full discussion of, and report upon, the collection of 

 landshells and Tertiary fossils collected by Mr. W. H. Ochs- 

 ner has been prepared and submitted for publication. But 

 the publication seeming likely to be delayed, it was thought 

 best to print diagnoses of the new species in order that the 

 credit due to the collector and to the Academy might not be 

 diminished by later researches carried on by other agencies. 



The types of these new forms form part of the Academy's 

 collection; cotypes have been deposited in the collection of 

 the U. S. National Museum at Washington. 



It is expected that when the complete report is issued the 

 species will be suitably figured, and that report contains a 

 full discussion of their relations to other previously described 

 species and to the conditions under which they live. 



The descriptions of the new species of fossils are less likely 

 to be anticipated and are therefore left for appearance in the 

 final report. 



December 31. 1917 



