344 DURHAM DIPTERA. 



XLVI. 584. 



584. Themira, Dsv. 



1 (4). Male anus with very prominent hair tufts. 



2 (3). Sternopleura with a white reflection. 



(2541. putris, L.) 



3 (2). Sternopleura without white reflection. 



583. Henicita, Westw. (2540. leacht, Mg.) 



4 (1). Anus of male without hair tufts. (2544. minor, Hal.) 



585. Saltella, Dsv. 

 Life history unknown. 



1 (2). Abdomen at the base, all the femora, and the mid 



tibiae orange. (2545. sphondylii, Schrk.) 



2 (1). Abdomen all black ; legs black, except the coxae and . 



the base of the hind femora which are yellow. 



(2546. nigripes, Dsv.) 



Family XLVIL— PIOPHILID^E. 



table op genera. 



1 (4). Wings without any dark brown spot at the tip. 



2 (3). Proboscis long and thin, the suckers hooked and 



much turned back. 



588. Madiza, Fin. (2558. glabra, Fin.) 



3 (2). Proboscis short and broad in front, not hook-like. 



Piophila, Fin. (587) 



4 (1). Wings with a dark brown spot at the tip. 



586. Mycetaulus (2547. bipunctatus, Fin.) 



TABLE OP SPECIES. 



587. Piophila, Fin. 

 Larvae live in cheese and in fat. 



1 (9). Face orange. 



2 (5). Mid and hind legs black, or at least dark; frons 



broadly black, yellow in front. 



3 (4). Base of fore femora yellow. 



2548. Piopliila casei, L. 

 Bishop Auckland, 3 $ and 6 ?, May-July. 



