DTJEHAM DIPTEEA. 283 



XXXIII. 474. 



79 (78). The row of bristles on the hind underside of the mid 



femora composed of closely packed almost shaggy- 

 hairs ; pubescence of mid tibiae distinct if short. 



(lineata, Stein) 



80 (71). Pubescence of mid tibiae looser, and becoming longer 



towards the point. 



81 (82). Outer foreside of hind tibiae with a regular row of 



equally long little bristles. (2160. mutica, Ztt.) 



82 (81). Hind tibiae with only the usual bristles. 



83 (84). Squamae black ; halteres yellow ; knees not yellow. 



{atra, Stein) 



84 (83). Squamae and halteres yellow ; knees rather widely 



yellow. (2 16 1. genitalis, Stein) 



Homolomyia. — Females. 

 (Numbers which follozv refer back to table of males). 



1 (10). Legs entirely, or at least the hind tibiae, translucent 



yellow. 



2 (7). Femora and tibiae almost entirely yellow. 



3 (4). Scutellum for the most part, or wholly, orange. 



(2138. pretiosa, Schin.) 



4 (3). Scutellum all black or grey, at most the extreme 



point yellow. 



5 (6). Fore tibiae front inner side with a distinct bristle 



before the point. {ornata, Mg.) 



6 (5). Fore tibiae inner side without bristles. 



hamata, Mcq. (2136) 



7 (2). Femora black, or at least darker coloured. 



8 (9). Hind tibiae inner side with 3-4 bristles. 



(2137. fuscula, Fin.) 



9 (8). Hind tibiae inner side with one bristle. 



(2139. pallitibia, Rnd.) or (grisea, Stein) 



10 (1). Legs entirely black, or at most the knees more or less 



yellow. 



11 (22). Mid tibiae inner side with a distinct bristle. 



12 (13). Orbits shining black, without a sign of dusting. 



(2155. corvina, Verr.) 



13 (12). Orbits otherwise coloured. 



