102 AN ACCOUNT OF BRITISH FLIES. 
y (i). Joints of antennz cylindrical, petio- 
late or non-petiolate. / 
(ii). Joints of antenne in ¢ oval, 
petioles long; in 2? sessile and 
cylindrical. 8. Sciarine. 
The following are the characters of the more important genera 
found in Britain : 
Sub-family Scarine.* 
y (i.) 1. Wing longer than body; surface 
minutely hairy; joints of an- 
tenn hairy. 1. Sciara. 
y (i.) 2. Wing small, shorter than abdomen ; 
surface minutely hairy. . Bradysia. 
y (i.) 3. Wings and halteres absent. Epidapus. 
y (il.) 4. Wing much the same as Sciara, but , 
the fork longer; basal branch 
wavy, and upper branch vaulted. 4. Zygoneura. 
Ww 
Sub-family Afycetophilina.t 
A. Three ocelli on the front. 
I. Abdomen with seven segments. 
a. Proboscis not elongated. 
6. Costal extending beyond tip of 
cubitus. 
c. Basal part of cubital vein and 
middle transverse vein equally 
long. 
d. Auxiliary vein extending to costal. Anaclinta. 
cc. Basal part of cubital vein longer 
than the middle transverse vein. 
d. Base of fourth hind areolet under 
base of cubital vein. Leptomorphus. 
dd. Base of fourth hind areolet nearer 
base of wing than is the base of 
second hind areolet, Boletina. 
66. Costal vein not extending beyond 
the tip of the cubitus. | Glaphyroptera. 
aa. Proboscis elongated. Guoriste. 
* Beitrag zu einer Monog. der Sciarinen. Winnertz. Wien., 1867. 
+ The classifications of the following families is also according to Winnertz. 
Verh. Zool. Bot. Geo., 1863.) 
