308 DURHAM DIPTERA. 



XXXIV. 499. 



5 (G). Wings, with the exception of the base, tinged smoky 



grey, and short. {anthrax, Schin.) 



6 (5). Wings coloured yellow-brown, and longer. 



(carbonaria, Pok.) 



500. Gymnomera, Rnd. 



1 (2). Antennae all orange; dorsum grey. 



(2244. dorsata, Ztt.) 



2 (1). Last joint of the antennae black ; dorsum orange. 



(2243. tarsea, Fin.) 



500£. Cochliarium, Beck. 



1 (6). Four scutellar bristles. 



2 (5). Palpi yellow. 



3 (4). Second antennal joint black ; face black in the male, 



yellow in the female ; V.3. and V.4. parallel ; 



bristles on head and thorax black, or chiefly 



black ; legs yellow ; tarsi brown. 



{ctineiventris, Ztt.) 



4 (3). Second antennal joint yellow; face yellow in both 



sexes ; V.3. and V.4. diverging ; bristles of the 

 head and thorax pale yellow ; legs yellow ; last 

 tarsal joint brown. (albipila, Ztt.) 



5 (2). Palpi yellow ; legs all chestnut. (castanipes, Beck.) 



6 (1). Two scutellar bristles ; palpi black, grey dusted ; 



femora black, except the tip ; rest of the legs 

 orange. {lasiostoma, Beck.) 



Family XXXV.— PHYCODROMID^E. 



TABLE OP GENERA AND SPECIES. 



1 (2). Third antennal joint conical, rounded, much longer 

 than the second ; head nearly as broad as the 

 thorax. 



502. Orygma. 



2246. Orygma luctuositm, Mg. 

 Hesleden Shore, 2 $, August, 1900. 



