288 DURHAM DIPTERA. 



XXXIII. 480. 



12 (11) (13). Antennae with all the joints pale. 



(2178. pallicomis, Ztt.) 



13 (11) (12). Antennae with the basal joints reddish; femora 



grey. (2001. Spilogaster ungulata, Rnd.) 



14 (10). Abdomen with the sides of the basal segments pale, 



but with a broad grey central stripe ; hind segments 

 dark and spotted. 



Catnosia tricolor, Ztt. 

 Bishop Auckland, Hesleden, 3 $ and 2 $, July- 

 August, 1900. 



15 (7). Abdomen grey. 



16 (25). Abdomen spotted. 



17 (22). Antennae with all the joints black or grey. 



18 (19). Mid and hind femora and all the tibiae pale. 



2179. Cosnosia sex no fa fa, Mg. 

 Hesleden, 2 $ and 1 ?, August, 1900 ; Waskerley, 

 1 $ ; Bishop Auckland, 1 $, July, 1901. 



19 (18), Hind femora with the apex black. 



20 (21). Tibiae all pale. (2180. genualis, Rnd.) 



21 (20). Mid and hind tibiae more or less darkened. 



(2 18 1. geniculata, Fin.) 



22 (17). Antennae with the basal joints rufous. 



23 (24). Wings clear. (2182. verna, F.) 



24 (23). Wings partly nigrescent. (2184. costata, Mg.) 



25 (16). Abdomen unspotted. (2183. pedella, Ztt.) 



480^. LlSPOREPHELA. 



Lisporefihela alma, Mg. 



Escomb, 1 $, April, 1898. This is an addition to 

 the British list. The identification is Herr Stein's. 



483. Lispe, Ltr. 



1 (6). Palpi pale. 



2 (3). Tibiae black. (2187. tentaailata, Deg.) 



3 (2). Tibia? yellow. 



