Vol. XI] COLE AND LOVETT—L1ST OF OREGON DIPTERA £63 



373. Hydrophorus philombrius Wheeler 

 Hood River, VI-2 and Forest Grove, IX-27 (Cole). 



374. Scellus monstrosus O. S. 

 Series taken at Burns in June (Thompson). The speci- 

 mens do not tally exactly with the original description, but 

 Dr. Aldrich, who examined specimens of this and the fol- 

 lowing species, is certain of the determination. The spoon- 

 shaped appendages of the male genitalia are dark brown 

 with a tuft of black hair. The appendage on the inner side 

 of the base of the fore tibia ends in a short spine and has 

 about seven short hairs on it. This species is very near 

 avidus. 



375. Scellus vigil O. S. 

 Corvallis, V-24; Forest Grove in May and September 

 (Cole). These specimens lack the long white pile on the 

 hind femora which Aldrich mentions in his table of species 

 (1907, Ent. News XVIII, p. 136). The species is very 

 close to, if not identical with, filifer Loew. Only females 

 were taken in September, although about seventy specimens 

 were collected, and these were darker and larger than the 

 earlier forms. All were collected on the ground, many by 

 sweeping over grass. 



376. Liancalus limbatus V. D. 



Mary's Peak, VI, one specimen collected. 1917, Ent. 

 News, XXVIII, p. 127. 



377. Dolichopus aurifex V. D. 



Newport, VIII-13 (Aldrich). 1921, U. S. Nat. Mus., 

 Bull. 116, p. 225. 



378. Dolichopus cavatus V. D. 



Hood River, VI (Cole); Corvallis. 1921, U. S. Nat. 

 Mus., Bull. 1 16, p. 227. M. C. Van Duzee det. 



379. Dolichopus celeripes V. D. 



Hood River, VIII-2 (Childs). 1921, U. S. Nat. Mus., 

 Bull. 116, p. 244. Two specimens collected. 



