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. Eyes of the male contiguous. Legs red. Hind tibire 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. ; Zii.spoliata, Shr.sulcicollis, 

 Mgrle. ; Mg. ; Ct. vitripennis, Mg. ; Mq. ; Ct. senilis, Fb. ; Mg. ; 

 Mq. ; Ct. domesticus, Mg. ; Mq. ; Ct. Niger, antennis piceis, alis 

 subcinereis, halteribus pedibusque fulvis ; Mas. thorace sulcato. 

 Long. 2-21 . 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.; 

 Ztt. rugosus, Fb. ; Mg. ; Mq. ; Ct. ! b. e. 609. 7. tarsatus, Pz. 

 ater, Fin. nigripes, Mgle. ; Mg. ; Ct. Niger, alis nigricantibus, tarsis 

 ferrugineis. Long. 2-2f; alar. 31-5. 



Black. Wings blackish. Tarsi ferruginous. 

 Generally distributed. (E. I.) 



FAMILY IX. EMPIDJB. 



EMPLOYE, Leach, Sam. Comp. 1819. Empides, LI., 1804. Empidii, 

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

 Mcq. Empidina et Hybotina, End. Empidia, Tacky dromides, 

 Hyboiidce, Ztt. Empidice, Tacky dromia, Hybotince, Mg. 



Antenna porrectse ; articulo tertio exannulato ; stylo vel arista apicali, 

 biarticulate aut exarticulata, rarius subdorsali aut obsoleta. Epi- 



