316 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Sei. 



776. Cordylura 24 latifrons Loew 

 Corvallis, V-2 (Lovett). Malloch det. 



777. Parallelomma 25 varipes (Walk.) 

 Gaston, VII-10 (Cole). 



778. Scatophaga furcata (Say) 

 Corvallis and Forest Grove, VI. 



779. Scatophaga merdaria (Fabr.) 



Hood River, X-29 (Childs) ; Forest Grove, 111-14 

 (Cole). The adults are predaceous, having been taken with 

 mycetophilids and leafhoppers. 



780. Scatophaga stercoraria (Linn.) 



Almost cosmopolitan. Many localities, V to X. The 

 larvae breed in excrement. 



Family CLUSIODID^ 



This family can be recognized by the chaetotaxy of the 

 head. The cross-veins of the wings are closely approximated 

 except in Clusia and the sixth vein does not reach the wing 

 margin. The adults are rather rare. They may be found 

 on tree trunks, where they sometimes feed on exuding sap. 



781. Clusia occidentalis Mall. 



Mary's Peak, at base, V-14 (Lovett) ; Pamelia Lake, 

 Mt. Jefferson, VII-27 (Bridwell). 1918, Proc. Ent. Soc. 

 Wash., XX, p. 4. 



24 There are at least three undetermined species in material collected at 

 Corvallis and Hood River, but the genus will have to be worked up before 

 they can be named with certainty. 



25 One undetermined species is not uncommon at Hood River. 



