DIPTERA. 419 
Black. Abdomen piceous, tawny beneath. Legs tawny ; tibia and 
tarsi brown. Wings brown; veins brown, tawny at the base. Halteres 
tawny. Length of the body 2 lines; of the wings 4 lines. 
United States. 
Scrara Antica, Fom. 
Altra; thorax guttis duabus anticis ferrugineis ; pedes nigri, femoribus 
anticis pallide piceis; ale nigricantes. 
Deep black. Thorax with a ferruginous dot on each side in front. 
Legs black; fore femora pale piceous. Wings blackish; yeins and hal- 
teres black. Length of the body 3} lines; of the wings 7 lines. 
Amazon Region. 
Sorara Fascrata, Fem. 
Nigra; caput et thoraw cinereo tomentosa; abdominis segmenta mar- 
ginibus posticis albidis ; pedes picei, tarsis nigris ; ale nigricantes. 
Black. Head and thorax with cinereous tomentum. Hind borders 
of the abdominal segments whitish. Legs piceous ; tarsi black. Wings 
blackish ; veins and halteres black. Length of the body 2} lines; of the 
wings 5 lines. 
Brazil. 
ScIARA COGNATA. 
‘ 
Sciara cognata, Cat. Dipt. Brit. Mus. i. 103. 
Brazil. It also inhabits Madeira, and is said to draw blood like the 
Culicide. 
Scrara Inpica, Fem. 
Nigra; antenne sat graciles, thorace vix longiores; thorax guttis 
duabus anticis minimis ferruyineis; abdomen pubescens, thorace 
triplo lonyius, rufo bivittatum ; pedes longiusculi, sat validi; ale 
Suscescentes, apud costam nigricantes. 
Black. Antenne rather slender, hardly longer than the thorax. 
Thorax with a minute ferruginous dot on each side in front. Abdomen 
