Vol. XIJ COLL AMD tOVBTT—USI Of ORECOH DIPTBRA 33 J 



862. Sepsis signifera curvitibia Mel. 



Series taken at Corvallis, VI 1 1- 13 (Lovett). 1917, 

 Wash. Agr. Exp. Sta., Bull. 143, p. 28. 



863. Sepsis vicaria Walk. 

 Portland (Melander). 



864. Sepsis violacea Meig. 

 Common at Corvallis and Hood River. 



865. Sepsis violacea hecate Mel. 

 Portland, V-22 (Melander). 1917, Wash. Agr. Exp. 

 Sta., Bull. 143, p. 22. 



866. Sepsis violacea similis Macq. 

 Oregon City (Melander). Melander makes this form a 

 variety of violacea in his recent revision of the family. 



Family PIOPHILID^l 

 This group is now separated from the Sepsidae. The 

 species are mostly black in color and quite small; they differ 

 from the Sepsidae in having the costa broken near the ter- 

 mination of the first vein, the third and fourth veins parallel 

 or slightly diverging, mesonotum finely pubescent, abdomen 

 never with bristles, etc. The larvae of some have the 

 peculiar power of "jumping." 



867. Piophila casei (Linn.; 



A species of general distribution, the larvae of which are 

 known as "skippers" or "cheese-mites"; they occur in cheese, 

 rotten fungi, fatty tissues, the fat of ham and bacon, and 

 in dead bodies. Cases of enteric and nasal myiasis are attri- 

 buted to this species. 



868. Piophila pusilla CM ; _ 



Forest Grove, IV-8 (Cole). First recorded from North 

 America in 1913 by Melander. 



869. Mycetaulus bipunctatus (Fall.) 

 Forest Grove, VIII-1 (Cole). This European species 

 has a very wide distribution. 



