PROCEEDINGS 



OF THE 



CALIFORNIA ACADEMY OF SCIENCES 



Fourth Series 



Vol. I, pp. 289-322 October 7, 1911 



Expedition of the California Academy of 



Sciences to the Galapagos Islands, 



19054906 



III 



The Butterflies and Hawk-Moths of the Galapagos Islands 



Francis X. Williams 



Assistant Curator of Entomology, Kansas University, 

 Entomologist to the Expedition 



SAN FRANCISCO 



Published by the Academy 



1911 



