Vol. XI] COLE AND LOVETT—LIST OF OREGON DIPTERA ^\9 



Most of these flies are quite small and black or brownish 

 in color. They are found about decomposing vegetable and 

 animal matter and are seen hovering over dung or sewage, 

 in which the larvae live. The larvae of Leptocera are bred 

 from fungi, diseased potatoes, etc., and are probably aquatic 

 in some cases. 



The following species were determined by Mr. A. Spuler, 

 who has just completed a monograph of the family which 

 should soon be published. 



791. Leptocera atra (Adams) 



Tillamook, 111-26 (Burrill) ; Forest Grove, 111-21 and 

 Hood River, IX-29 to X-26 (Cole). 



792. Leptocera crassimana (Halid.) 



Tillamook, 111-26 (Burrill); Forest Grove, 111-21 and 

 VI-2 (Cole). 



793. Leptocera fontinalis (Fall.) 

 Portland, VIII-20 (Melander). 



794. Leptocera fuscipennis (Halid.) 

 Hood River, VI-19 to X-26 (Cole). 



795. Leptocera sp. nov. Spuler 



Forest Grove, IV-2 and Hood River, IX-5 (Cole). 



796. Leptocera sp. nov. Spuler 

 Hood River, IX-5 (Cole). 



797. Leptocera limosa (Fall.) 

 Forest Grove, 111-21 to IX-27 (Cole) ; Hood River, VI 

 to IX and Corvallis, IX-10 (Cole); Tillamook, 111-26 

 (Burrill). 



798. Leptocera sp. nov. Spuler 

 Hood River, X-ll (Cole). 



799. Leptocera roralis (Rond.) 



Hood River, VI-4 to IX-29 and Forest Grove, 111-21 

 (Cole); Portland, VIII-20 (Melander). 



