138 AN ACCOUNT OF BRITISH FIIES. 



brown ; the thorax shiny and covered with pale hairs. The abdomen 

 brownish. Palpi brownish ; antennje dark brown, first and second 

 joints yellowish. Legs short, yellowish \ posterior tibiae have short, 

 but distinct spines. Wings hyaline ; veins stout and brown ; areolet 

 small ; first longitudinal vein connected with second before the 

 areolet ; fork of fourth longitudinal vein with very short petiole. 

 Length 2\ lin. This species may be known from L. ruftivi by being 

 shorter in legs and antennre and by the stout veins. 



iPlatyura, F. 

 Genus Sciophila, Mg. = {^^-^^^^j^^,,^^ l^^. 



In this genus the costal vein extends to the tip of the wing. The 

 body is slender and elongated. Head small. Proboscis short. Palpi 

 four-jointed, fourth joint long and slender, first and second joints 

 short. Antennae i6-jointed, as long in ?, longer in cJ, than head 

 and thorax. Eyes oblong ; ocelli three in number. Thorax short, 

 with black hairs. Abdomen slender, seven segments, cylindrical in 

 (J, fusiform in ?. Legs long and slender; femora hairy, tibiaa 

 setose ; spurs moderately long. Wings moderately broad, minutely 

 hairy ; first longitudinal vein slightly curved towards its tip, often 

 united with costal, and connected with second longitudinal near 

 its tip by a transverse veinlet ; third longitudinal arises from the 

 second before the middle of the wing ; fourth longitudinal forked at 

 beyond the middle of wing ; fifth forked, forks nearly straight ; 

 seventh very near the base. Areolets twelve, including two 

 cubitals. 



S. tenuis, Wlk. 



This gnat is slender and tawny. Head tawny, vertex black. Palpi 

 and proboscis yellowish ; antennae dark brown, yellowish at the base. 

 Thorax has three dark stripes, the middle one long, the lateral ones 

 short. Abdomen tawny. Legs yellowish, long and slender ; posterior 

 tibiae with minute spines and very short spurs. Wings nearly limpi< I ; 

 transverse veinlet springs from the first longitudinal vein opposite 

 the middle of the first cubital areolet. Length 2^ lin. Appears to 

 be uncommon ; found in August. 



S.fasciata, Zett. 



Yellowish ; head with vertex black ; antennce dark, yellowish at 

 the base. Three black stripes on the thorax, lateral stripes short. 

 Abdomen black, with a yellowish border on the posterior edge of 

 each segment. Legs yellowish; tarsi brown; posterior tibiae with 



