- 
186 AN ACCOUNT OF BRITISH FLIES. 
C. minimus, Mg. 
Deep black. Veins of wings all white; halteres white. Legs 
slightly pubescent, and deep shiny black. Length, 4 to 2 lin. 
Genus.—Zanytarsus, V. d. Wulp. 
Wings hairy; cubital vein straight, or almost straight, ending near 
the end of costal; first joint of the anterior tarsi /omger than the 
tibiz. Forceps of ¢ slender. : 
T. punctipes, Wied. 
Black, with green abdomen. Wings milk-white, with pale veins. 
Legs reddish-brown, often, very pale and transparent. Antennz 
brown; halteres green. Length, 14 to 2 lin. An abundant 
autumnal species. 
T. tenuis, Mg. 
Thorax green, with three dark gray stripes; rest dark brown to 
black, Veins of the wings testaceous. Halteres white. Legs and 
antennz and head tawny. Length, 14 to 2 lin. 
T. flavipes, Mg. 
Shining black ; head and antenne dark brown. Wings whitish. 
Veins pale, reddish-brown towards the costa. Halteres white, with 
black knob. Anterior legs tawny, and dark brown towards the apex 
of joints; mesothoracic legs the same; metathoracic pair black ; 
femora partly tawny. Length, 14 to 2 lin. A fairly abundant 
species in summer and autumn. 
The following are also probably British : 
7. ictericus, Wik. veins and halteres whitish. Legs pale tes- 
taceous. Length, 1 lin. (2). 
[ Brownish-black. Thorax testaceous, with three 
black stripes. First, second, and third veins 
brown, rest testaceous. . Legs dark testaceous. 
Length, 2 lin. 
Dark green. Thorax with three black stripes. 
Legs pale dull testaceous green. Length, 
1? lin. (3) : 
E Thorax gray, with three black dorsal 
i Wings pubescent, nearly limpid ; 
T. flabellatus, Mg. ... 
T. pusio, Mg. 
stripes. Wings pubescent; first, second, and 
third veins testaceous. Abdomen pubescent. 
Legs brown, long, slender, minutely pubescent ; 
tarsi and tips of femora and tibie black. 
Common. Appears in April. Length, 3 lin. 
Testaceous. Thorax with three brown stripes. 
Wings pubescent; veins brown. Abdomen 
green, hind borders of segments brown towards 
the tip. Length, 2 lin, 
I. precox, Mg. 
I. debilis, Mg. (?) 
