DUKHAM DIPTERA. 275 



XXXIII. 471. 



12 (11). Mid metatarsi simple. (21 10. cilicrtira, Rnd.) 



13 (10). Hind tibiae without the long even row of bristles. 



14 (15). Abdomen with a straight nearly continuous stripe 



and small subanal processes. (2 n 2. florilega, Ztt.) 



15 (14). Abdominal stripe consisting of small triangular 



spots. (2105. seneczella, Mde.) 



16 (6) (9). Abdomen short and flat ; legs dark brown. 



(2106. intersecta, Mg.) 



17 (3) (20). Thorax with five stripes. 



18 (19). Eyes of the male a little separate. 



(2101. disc re ta, Mg.) 

 19(18). Eyes of the male touching. (2 n 6. neglecta, Mde.) 



20 (3) (17). Thorax indistinctly striped or unstriped. 



21 (32) (33). Thorax black or dark brown. 



22 (25). Antennae very short. 



23 (24). Costa and V.I, thick and dark. (htimerella, Ztt.) 



24 (23). Costa and VI . normal ; abdomen narrow and hairy. 



24a (24b). Dark grey species ; abdomen with a black central 



stripe and transverse bands. 



(2108. muscaria, Mg.) 



24b (24a). Light grey species ; central abdominal line dis- 

 appearing in segments 3 and 4. 



(21 13. vetula, Ztt.) 



25 (22). Antennae of moderate length. 



26 (29). Wings blackish or brownish. 



27 (28). Abdomen dark and indistinctly striped. 



(2104. lactuca, Bouche'.) 



28 (27). Abdomen grey with a line of triangular spots. 



(2103. dissecta, Mg.) 



29 (26). Wings yellow or pale brown. 



30 (31). Hind tibiae with the inner sides bare. 



2 1 14. Phorbia ignota. 

 Bishop Auckland, 8 $ and 1 $, March-May, 1902. 



31 (30). Hind tibiae with bristles on the inner side. 



(2 1 1 7. exigua, Mde.) 



32 (21) (33). Thorax with short white spot-like stripes. 



(2107. obscura, Mcq.) 



