I So AN ACCOUNT OF BRITISH FLIES. 



clothed with white downy hairs ; head and palpi brownish. Antennae 

 in $ brown, almost white at the tips ; in % they are yellow, 

 and the thorax is yellowish-green, with three dark stripes. Legs pale 

 green, tips of all the joints black. Wings pale. Length, 3 to 3^ lin. 



C.pedestris, Mg. 

 Wings pale, the extremity black. Closely related to the former. 



C. pictulus, Mg. = C. stricticus., F., C. histrio, Zett. 



Black. Wings white, with a dark discal spot and with three pale 

 gray spots in the disc of the areolets, two along hind border and one 

 towards the tip ; anterior veins testaceous, rest pale. Thorax 

 grayish, with three black stripes. Abdomen with a pale band on 

 hind border of each segment. Legs almost white, hairy, tips of 

 joints dark brown. Length, 3 to 3^ lin. A large and common 

 species. 



C. albimamis, Mg. = C. a7imilaris, Mg., Panzer. 



Shining black ; legs long and slender, dark brown, metatarsi 

 ivhite, also posterior tibiae. Anterior veins of wings black, rest white. 

 Length, 2 to 3 lin. 



C. aprilifi2is, Mg. 



Yellowish-green ; thorax with three dark brown stripes, sides of 

 thorax testaceous, with gray hairs. Abdomen black, with a band of 

 gray hairs on the posterior border of each segment, anal segment black. 

 Head dark brown. Legs testaceous, tips of the joints brown. 

 Wings whitish, costal and two front veins and discal transverse 

 veinlet brown. Length, 2\ to 3 lin. 



C. tmbecidosus, Mg. 



Testaceous ; head dark brown, palpi and antennae black. Thorax 

 with three dark stripes. Abdomen black, the hind border of each 

 segment being silvery white. Wings whitish, with gray stripes along 

 the veins, veins all pale. Legs reddish-brown, long and slender. 

 Length, 2\ to 3 lin. Not uncommon near most damp places. 



C. maculipennis, Mg. 

 Black ; thorax gray above, with four slender deep-brown stripes. 

 Abdomen very hairy. Wings while, with gray oblong spots on the 

 discs of most of the areolets, veins all pale, the ist, 2nd and 3rd 

 sometimes faint brown. Legs dull reddish-brown, coxce and femora 

 black, long and slender. Length, 2i to 3 lin. Common, but some- 

 what local. 



