158 DURHAM DIPTEEA. 



XXIV. 250. 



6 (5). Third joint of the hind tarsi clothed behind with stiff 

 bristly hairs, like the fourth joint ; hind femora at 

 most black at the tip. ( I 354- &?ieicoxa, Mg.) 



252. Chrysotimus, Lw. 



1 (2). Antennse black. (1356. molliculus, Fin.) 



2 (1). Antennae yellow. (1357. concinnus, Ztt.) 



253. Xanthochlorus. 



1 (2). Dorsum yellow with a green patch behind; frons 



grey. ( I 359« tenellus, W.) 



2 (1). Dorsum and frons metallic grey-green, shimmering. 



(1358. ornatus, Hal.) 



257- Thinophilus, Whlbg. 



1 (2). Femora with the exception of the tip black. 



(1363. flavipalpis, Ztt.) 



2 (1). Femora with the exception of the tip yellow. 



(1364. ruficornis, Hal.) 



259. Aphrosylus. 

 Frequent the verge of the sea. 



1 (4). Antennae all black ; size, 5 mm. 



2 (3). Hind femora with 3-4 small but distinct bristles 



above near the base; normally slaty-grey. 



(1366. celtiber, Hal.) 



3 (2). Hind femora without any distinct bristles above near 



the base; normally ochreous-grey. 



(1367. raptor, Hal.) 



4 (1). Antennae with the first two joints reddish ; size, 2 mm. 



(1368. ferox, Hal.) 



Family XXV.— LONCHOPTERID^E. 



260. LONCHOPTERA, Mg. 

 TABLE OP SPECIES. 



Life history unknown. 

 1 (8). Dorsum yellow with or without dark stripes 



