226 CALIFORNIA ACADEMY OF SCIENCES [Proc. *th Se*. 



144. Dilophus serotinus Loew 

 Odell, X-14 (H. F. Wilson). 



145. Dilophus tibialis Loew 

 Hood River, VI-8 (Cole). 



Family SCATOPSID^ 



Fig. 10. Scatopse notata Linn. 



These very small black flies were formerly included in the 

 Bibionida but now are generally given family rank. The 

 costa and two veins next to it are thickened, the other veins 

 being very weak. The larva of all the known species are 

 recorded as breeding in excrement. Several species have been 

 bred from sewers. 



146. Scatopse notata Linn. 

 Corvallis, XI-30 (Bridwell) ; Crystal Lake VI-8. 



147. Rhegmoclema 13 atrata (Say) 

 Hood River, X-3 (Cole) ; Corvallis. 



148. Reichertella 14 collaris Mel. 

 Corvallis, IX-10 (Cole), 1916 Wash. Exp. Sta., Bull, 

 130, p. 10. 



13 1912, Zool. Anzeiger, XL, p. 276. 

 1*1912, Zool. Anzeiger, XL, p. 268. 



