Vol. XI] COLE ASD LOVETT—UST OF OREGON DIPT ERA 217 



growth, damp, dark places, and can often be swept from 

 grass in shady places. Some are found on tree trunks; and 

 windows in old deserted houses are good places to collect 

 in certain seasons. Western Oregon is undoubtedly rich in 

 forms of this group and the list given below could be greatly 

 increased by one interested in the family. In addition to the 

 species we have listed there are some which could not be 

 identified with certainty, owing to the lack of material or to 

 the imperfect condition of the specimens. One species each 

 of Leia, Brachypeza, Rhymosia, Odontopoda and Mycomya 

 were taken and six species of Mycetophila, which could not 

 be identified. 



95. Bolitophila hybrida (Meig.) 



Forest Grove, 111-28 (Cole); Tillamook, 111-26 (Bur- 

 rill). 



96. Symmerus annulatus (Meig.) 



Several specimens, taken at Corvallis, IX- 10 (Cole), are 

 probably this species, which has been recorded from New 

 Jersey and New Hampshire. The wing venation is the same 

 as that given in Williston's Manual on page 134 (Ples- 

 tiana), but the wing is more pointed. 



97. Diadocidia borealis Coq. 



Forest Grove, 11-10, 111-14 and V-2 (Cole). In one 

 female the tip of the first radial vein is distinctly proximad 

 of the end of the anterior branch of the cubitus. 



98. Apemon 6 maudae (Coq.) 

 Corvallis, V-3 to V-30. 



99. Apemon pectoralis (Coq.) 

 Corvallis, VI-4. 



100. Platyura nigra Cole 



Forest Grove, V-20 (Cole). 1919, Proc. Cal. Acad. Sci. 

 Ser. 4, IX, p. 222. 



101. Macrocera formosa Loew 

 Hood River, V-2 (Cole). 



6 ioo9, Genera Insectoruni, Mycetophilidx, p. 20. 



