DUKHAM DIPTEEA. 287 



XXXIII. 478. 



3 (2) (4) (5). The mid and hind tibiae and the fore knees 



orange ; fore tibiae, except the base, dark. 

 217 1. Caricea exsul, Ztt. 

 Redcar, 1 $, 7-6-02. 



4 (2) (3) (5). The tibia? only reddish. (2172. humilis, Mg.) 



5 (2) (3) (4). Only the base of the fore tibiae reddish. 



(2172. sexmaculata, Mg.) 



6 (1). Abdomen unspotted. 



7 (8). Legs for the most part pale ; large species, 5-7 mm. 



2173. Caricea intermedia, Fin. 

 Bishop Auckland, Harperley, Shull, Bedburn, 5 $ 

 and 1 $, June-July, 1902. 



8 (7). Legs for the greater part black ; smaller species, 



4 mm. (2174. means, Mg.) 



480. Ccenosia, Mg. 



1 (6). Legs black. 



2 (5). Abdomen spotted. 



3 (4). Thorax with three more or less confluent stripes; 



three post-sutural bristles. 



(2015. Limnophora triangula, Fin.) 



4 (3). Thorax with one central stripe ; four post-sutural 



bristles. (2007. Spilogaster scrupulosa, Ztt.) 



5 (2). Abdomen unspotted ; very small all black species, 



2 mm. 



479. Allognota, Pok. (2175. agromyzella, Rnd.) 



6 (1). Legs more or less yellow. 



7 (15). Abdomen partly yellow. 



8 (9). Palpi pale with dark tips ; very small species, 2 mm. 



(2176. i?ifanhda, Rnd.) 



9 (8). Palpi quite pale. 



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



without a grey central stripe ; hind segments dark 

 and spotted. 



11 (12) (13). Antennae with all the joints black or grey. 



(2177. elegantula, Rnd.) 



