204 CALIFORNIA ACADEMY OF SCIENCES (Proc. 4th Sei. 



6. Limnobia sciophila O. S. 



Corvallis, IV-20 and V-28; Mt. Angel (Epper). C. 

 P. A. det. Very common at Forest Grove in September 

 and October around thickly wooded sections. A disturbance 

 of the underbrush in more or less moist sections will often 

 start hundreds of them into flight. 



7. Dicranoptycha sobrina O. S. 

 Forest Grove, VII-8 and 12 (Cole). 



8. Ormosia subcornuta Alex. 



Forest Grove, 111-20 to 26 and Hillsboro, IV-1 (Cole). 

 A good series of this small form was taken in a small 

 swampy area. 1920, Pomona College Journ. Ent. and 

 Zoology, XII, 88. The western representative of O. me\- 

 gettii (O. S. ) 



9. Ormosia stylifer Alex. 



Forest Grove, VI-3 (Cole). C. P. A. det. 1919, Insec. 

 Insc. Mens. VII, p. 146. A species near deviata Dietz. 



10. Erioptera alicia Alex. 



Forest Grove, VI-3 (Cole). C. P. A. det. Two females 

 collected. Previously known from the single type female 

 from Calif. 1914, Proc. Acad. Nat. Sci. Phila., LXVI, p. 

 585. 



11. Erioptera oregonensis Alex. 



Tillamook, 111-26 (A. C. Burrill). 1920, Pomona Col- 

 lege Jour. Ent. and Zoology XII, 87. 



12. Molophilus comatus Doane 

 Hood River, X-l (Cole). C. P. A. det. 



13. Molophilus nitidus Coq. 



Hood River, VI-2 (Cole) ; Forest Grove, V-4 (Burrill). 



14. Helobia hybrida (Meig.) 



Corvallis, V-29; Hood River VI-8 (Cole) . C. P. A. det. 



