318 DUEHAM DIPTEKA. 



XXXVIII. 523. 



19 (12). Arista short-plumed, yet always distinctly plumose. 



20 (21). Wings with a long pale stripe near the fore margin ; 



V.2. and 0.2. being distinctly paler than the rest 

 of the wing. 



2318. Sciomyza albocostata, Fin. 

 Hesleden, 1 $, June, 1900. 



21 (20). No pale wing stripe. 



22 (25). Legs orange. 



23(24). Dark grey species ; epistome hoary; abdomen dull. 



(2301. obtusa, Fin.) 



24 (23). Black species ; epistome black ; abdomen shining ; 



wings shorter than abdomen. 



(2296. brevipennis, Ztt.) 



25 (22). At least the fore legs entirely black. 



(2316. griseola, Fin.) 



26 (1). Arista bare, or very slightly pubescent. 



27 (35). Wings without bands or spots. 



28 (29) (30). Antennae entirely black ; wings dark brown on 



the fore margin. 



2305. Sciomyza cinerella, Fin. 

 Hesleden, 2 $, June-August, 1 899-1 900. 



29 (28) (30). Antennas yellow, front half of the third joint 



black ; wings not brown on the fore margin. 



(2306. dubia, Fin.) 



30 (28) (29). Antennae entirely yellow. 



31 (34). Fore legs yellow. 



32 (33). Epistome not descending below the eyes ; proboscis 



yellow ; dorsum grey, unmarked. 



(2307. pallidiventris, Fin.) 



33 (32). Epistome distinctly descending below the eyes ; 



proboscis dark ; dorsum with rudiments of two 

 stripes. ( 2 3 J 7' nasuta, Ztt.) 



34 (31). Fore legs black except the pale yellow coxae. 



(231 1. pusilla, Ztt.) or (2310. ventralis, Fin.) 



35 (27). Wings with grey bands or spots. 



36 (37). Wings with one brown band, and three or four dark 



spots near X.4. ( 2 3°3- nana y Fin.) 



