3]2 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Sex. 



738. Hydrophoria divisa (Meig.) 

 Hood River, VI-3 (Cole). Malloch det. 



739. Hylemyia alcathoe (Walk) 

 Salem, VII-4; Hood River, VI-30 and Eagle Rock, VIM 

 (Melander) ; Hood River, V-19 to X-30 and Forest Grove, 

 V-25 to IX-27 (Cole). 



740. Hylemyia antiqua Meig. 

 The onion maggot, widespread and often injurious. 



741. Hylemyia anthracina Mall. 



Hood River, VI-21 (Cole). 1918, Trans. Amer. Ent. 

 Soc. XLIV, p. 314. 



742. Hylemyia fusciceps (Zett.) 



Corvallis, 1V-30 to VI-6; Gaston, VII-10 (Cole) ; subal- 

 pine regions on Mt. Jefferson, VII-20 (Bridwell). Com- 

 mon in several localities. The larvae feed in the roots of 

 cabbages, radish, seed corn, etc. 



743. Hylemyia lipsia (Walk.) 

 Grant Co., VIM 1 ( Chamberlin) . Malloch det. 



744. Hylemyia sp. nov. Mall. 



Blitzen River, VI 1-6. The single specimen a paratype. 



745. Hylemyia piloseta Mall. 



Corvallis, IV-26. 1918, Trans. Amer. Ent. Soc. XLIV, 

 p. 312. 



746. Hylemyia setiventris Stein 

 Joseph. Malloch det. 



747. Hylemyia substriata Stein 

 Forest Grove, IV-24 (Cole). Malloch det. 



748. Hylemyia variata (Fall.) 



Forest Grove, VII-5 (Melander) ; Hood River, VI-4 

 (Cole). 



