IlAwHAN 



nir.rouioat, Calif oral 



VOLUME FOUR 



NUMBER TWO 



Pomona (Eolbgp 

 Journal of lEntomologg 



MAY 1912 



Contents 



1 . CRAWFORD, D. L. 



2. ESSIG. E. O. 



3. DYAR. H. G. 



4. HALL. H. V. M. 



5. FELT, E. P. 



The Petroleum Fly of California 



Aphididae of Southern California VIII 



Some Lepidoptera from Mexico 



Studies in Acartna III 



Diarthronomyia Californica i Diptera. Itonldae' 



PUBLISHED QUARTERLY BY THE 



irpartmpiit of liologii of Jpomona (HolUyp 



CLAREMONT, CALIFORNIA, U. S. A. 

 Sponsor. A. J. COOK. D. Sc, State Horticultural Commissioner 



Entered at tlie Claremoiil, Cal.. Host-Office Oct 1. I'^n . as secoml-class matler. under Act of Congies^ of Mar. }, 1S79 



