ff ^^ 2. _1 f V 



oilege 

 lif rrr 



VOLUME FOUR 



NUMBER TWO 



Pomona (EoUn^P 

 dlmtntal of ^utmunloijij 



MAY 1912 



Contents 



CRAWFORD. D L 

 ESSIG E O. 

 DYAR. H.G 

 HALL. H. V. M. 

 FELT. E. P. 



The Petroleum Fly o( California 



Aphldldaeol Southern Calllurnla VIll 



Some Lepldoptero Irom Mexico 



Studies In Acarlna III 



Diarthronomyla CallfornlcaiDlptero. Itonldae 



PUBLISHED QUARTERLY BY THE 



Drparlmnit nf iHioloyii nf Jjnmmia (Enllryr 



CLAREMONT. CALIFORNIA. U. S. A. 

 Sponsor. A J COOK. D Sc.. State HorUcuHural ComnUssloner 



111. Cal I'o-it-offic 





llIKirr Act o( CoDI! 



