DURHAM DIPTERA. 1 43 



XXIV. 233. 



131 (146). Antennae with not more than the under side of the 



first joint and the basal under side of the second 

 pale. 



132 (137). Face with faint but distinct pale pubescence. 



Antennas practically all black. 



133 (136). Wings more or less tinged with brown. 



134 (135). Hind tibiae at tip, and metatarsus, blackish; hind 



femora with an obvious dark spot above near 

 the tip. (1203. nubilus, Mg.) 



185 (134). Hind tibiae slightly blackish at tip. Hind meta- 

 tarsi usually all black. 



(1204. latilimbatus, Mcq.) 

 136 (138). Wings clear. Hind tibiae entirely yellow. 



(12 1 9. anduhisiacus, Strobe.) 



187 (132). Face bare. Antennae with at least the tip of the 



first joint yellow beneath. 



188 (139). Hind coxae entirely yellow ; hind tibiae black at the 



tip. (12 14. amticornis, W.) 



139 (138). Hind coxae mainly grey. 



140 (141). Mid metatarsi, and even the tip of mid tibiae 



black. (12 1 6. mediicornis, Verr.) 



141 (140). Mid metatarsi pale at the base. 



142 (143). Hind tibiae distinctly blackened at the tip. 



(12 1 7. pnncticornis, Ztt.) 



143 (142). Hind tibiae quite pale, or only slightly darkened at 



the tip. 



144 (145). Hind tibiae obscured at the tip. Mid tibiae with 



5-6 bristles on the fore side. 



(12 1 2. signatus, Mg.) 



145 (144). Hind tibiae yellow to the tip. Mid tibiae with 3-4 



bristles on the fore side, pennatus, Mg. (12 10) 



146 (131). Antennae with more than the under side of the first 



joint and the basal under side of the second 

 pale. 



147 (150). Third antennal joint entirely black. 



148 (149). Hind coxae pale yellow. (12 18. linearis, Mg.) 



149 (148). Hind coxae grey. (1224. simplex, Mg.) 



