86 AN ACCOUNT Of BRITISH FLIES. 



A. pimpinellcEy F . 

 The larvce live in galls on Pimpinellce saxifraga. They pupate in 

 the earth. 



Section 2. — LESXREMiNyE. 



Sub-Genus. — Campylomyza^ Mg. 



The life histories of this sub-genus are not well known — many live 

 in decayed wood. They are common insects in hedges, woods and 

 windows, especially those of hot-houses. PI. i. (6). 



C.flavipes, Mg. = C. pa/Iipes, Zett.* 



Black, shining, with brown abdomen. Wings limpid, nerves dark , 

 halteres pale ; legs testaceous ; length I lin. Found amongst grass 

 in the autumn. 



C. bicolor, Mg. 

 Very like the former. Black ; fuscous abdomen ; wings limpid ; 

 distance between tip of first longitudinal vein and transverse veinlet 

 is four times the length of the latter ; halteres whitish ; legs pale ; 

 length I lin. Appears in the autumn. 



C. aceris, Mg. 

 Shining black ; abdomen piceous ; wings limpid ; halteres, veins of 

 wings and legs testaceous. Length ?,- lin. 



C. halterafa, Zett. = C. afi-a, ^^'lk. 



Black, piceous legs and abdomen. Halteres white ;t wings 

 limpid, gray, dark pubescence ; length i lin. Habits unknown. 

 PI. ii. (6). 



A fossil, Canipyloinyza {C. gnxndceva), has been found in the 

 Purbeck beds of the Dorsetshire CoasC. 



Sub-Genus. — Aficromyia, Rud. 

 M. globifera, Hal. = Campylomyza globifera, Wlk. et Hal." 



Imago. — Deep black, not glossy. Antennae not so long as the 

 thorax, 1 1 -jointed, fuscous ; first two joints black; second joint very 

 large in $ . Wings white, hyaline ; costal and two anterior veins light 

 brown, posterior veins colourless; halteres and legs dingy yellow- 

 abdomen long ; posterior segments in $ not so much attenuated as 

 usual ; eighth and ninth largely exserted, dingy yellow ; terminal 



* Dipt. Scan., vol. ix., p. 3672. 



t According to Walker they are piceous. 



