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 ; tliey 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. Hiud tibite simple in both 



sexes. Species 1. 

 a a. Eyes remote in both sexes. Legs black. Hiud tibia3 of the male 



dilated. Species 2. 



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

 Mg. ! iv. pl. 36. f. 17; Mq. ; Ct. ; Zii.—spoUata, 8\n:—sidcicoUis, 

 Mgi'le. ; Mg. ; Ct. — vitripennis, Mg. ; ]\Iq. ; Ct. — senilis, Fb. ; Mg. ; 

 Mq. ; Ct. — domesticus, Mg. ; Mq. ; Ct. Niger, antennis piceis, alls 

 subcinereis, halteribus pedibusque fulvis ; Mas. thorace sulcato. 

 Long. 2-2i ; alar. ^-^ lin. 



Black. Antennae 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. ; 



Zii.—n(r/osns,Yh.; Mg. ; Mq. ; Ct. ! b. e. 609. l.—tarsatus, Pz.— 

 ater. Fin. — nujrlpes, ISfgle. ; INIg. ; Ct. Niger, alis nigricantibus, tarsis 

 fernigineis. Long. 2-2|-; alar. 3^5. 



Black. Wings blackish. Tarsi ferruginous. 



Generally distributed. (E. I.) 



Family IX. EMPID^. 



EMPIDJ5, Leach, Sam. Comp. 1819. Empkhs, LI., 1801. Empidi'i, 

 Fallen, 1810. Empidice, Fallen, 1817. Empides et Ili/bolldes, 

 Mcq. EmpiditKe et Hyhoiince, Eud. Empidice, Tachijdr amides, 

 Rybolldce, Ztt. Einpldlce, Tachydromice, Hybotince, Alg. 



Antenna? porrecta^ ; aiticulo tertio exannulato ; stylo vcl arista apicali, 

 biarticulata aut exarticulata, rarius subdorsal! aut obsoleta. Epi- 



