35° DURHAM DIPTERA. 



XLIX. 



41 (34). Upper lip (labrum) entirely hidden (VII. 21). 



42 (43). Claws almost straight ; foot-pads very small, rudi- 



mentary. Ephydra, Fin. (612) 



43 (42). Claws bent ; foot-pads large and distinct. 



44 (45). Mouth edge quite bare. 



613. Ilythea, Hal. (2642. spilota, Hal.) 



45 (44). Mouth edge bristly or hairy (VII. 21). 



46 (47). Arista combed. Cenia, Dsv. (614) 



47 (46). Arista pubescent or bare. 



48 (49). Costa ending at, or shortly after V.3. 



Scatophila, Beck. (616) 



49 (48). Costa reaching to V.4. 



50(51). Arista quite bare (VII. 24); antennae kneed at the 

 first joint. 



617. Tichomyza, Mcq. (2657. fusca, Mcq.) 



51 (50). Arista pubescent ; antennae not kneed. 



SCATELLA, DSV. (615) 



52 (0). X.5 1 and X.6. present; V.I .a. distinct from V.I. b. ; 



third antennal joint round. Canace, Hal. (609) 



TABLES OF SPECIES. 



594. Notiphila, Fin. 



1 (2). Dorsum, pleurae, and abdomen all dusted with light 



grey. (2579. guttiventris, Stnh.) 



2 (1). Dorsum, pleurae, and abdomen not all grey dusted, 



but of different colours. 



3 (6). Antennae entirely black. 



4 (5). Palpi dark ; femora and tibiae black. 



(2576. ultginosa, Hal.) 



5 (4). Palpi pale ; tibiae mostly orange. 



(2577. nigricornis, Stnh.) 



6 (3). Antennae at least partly orange. 



7 (10). Dorsum with very distinct dark brown stripes and 



spots. 



8 (9). Fore tibiae yellow with a brown ring on the middle. 



(2580. metadata, Stnh.) 



9 (8). Fore tibiae all dark brown. (2581. venusta, Lw.) 



