SCENOPINUS. 85 



what bristly ; first cyathiform ; second transverse ; third long, pointed, 

 nearly cylindrical, slightly compressed, thickest at the base, obliquely 

 truncated at the tip. Thorax oblong, pubescent, somewhat matted ; 

 scutellum small, transverse, semioval. Wings lanceolate, finely pubes- 

 cent, parallel. Halteres uncovered, with large knobs. Abdomen with 

 8 segments, long, linear, marginated ; first segment very short ; second 

 the longest, with 2 oval hairy spots on the back ; third and following 

 short, transversely wrinkled. Legs short, simple, unarmed. 



Male. Eyes with blackish -blue bands; facets in the upper part larger 

 than those below. 



These flies are very sluggish ; they are found during the 

 summer on the leaves of plants, on walls, and on windows, 

 especially of stables. The two British species may be divided 

 into two sections : 



a. lives of the male eoiitiguous. Legs red. Hiud tibiae simple in both 



sexes. Species 1. 

 a a. Eyes remote in both sexes. Legs black. Hind tibias of the male 



dilated. Species 2. 



1. fenestralis, L. fn. 1845 (1761); Dg. ; Fb. ; LI. ; Fin.; 

 Mg. ! iv. pi. 36. f. 17; Mq. ; Ct. ; Ztt.spoliata, Sbr.sulcicollis, 

 Miii! : Ct. vitrl ponds, Mg. ; Mq. ; Ct. senilis, Fb. ; Mg. ; 

 Mq. ; Ct. ^dQiiH'xtirn*, Mg. ; Mq. ; Ct. Niger, antennis piceis, alis 

 subcinereis. halterilms pedibusque fulvis ; Mas. thorace sulcato. 

 Long. 2-2 ; alar. 3-4 lin. 



Black. Antenna? piceous. Wings slightly grey. Halteres and 

 legs tawny. Male. Thorax furrowed. 

 Generally distributed. (E. I.) 



2. fasciatus, Spl. e. c. (1763.) niger, Dg. ; Mg. ; Mq. ; Ct. ; 

 Zti.ruffosm, Fb. ; Mg. ; Mq. ; Ct. ! b. e. 609. 1tarsatus, Pz. 

 ater, Tin. niyripes, Mgle. ; Mg. ; Ct. Niger, alis nigricantibus, tarsis 

 ferrugineis. Long. 2-2|-; alar. 3-15. 



Black. Wings blackish. Tarsi ferruginous. 

 Generally distributed. (E. I.) 



FAMILY IX. EMPID^E. 



EMPID^E, Leach, Sam. Comp. 1819. Ewpides, LI., 1804. Empidii, 

 Fallen, 1810. Empidia, Fallen, 1817. Empides et Hybotides, 

 Mcq. Empid'ma et Hybotina, Had. JBmpidug, Tacky dr amides, 

 HybotidcB^ Ztt. Empidite, Tachydromue, Hybotince, Mg. 



Antennae porrecta? ; articulo tertio exannulato ; stylo vel arista apicali, 

 biarticulata aut exarticulata, rarius subdorsali aut obsoleta. Epi- 



