66 AN A ceo UNT OF BRITISH FLIES. 



fuscous. Head fuscous. Wing-cases pitch black \ antennse and 

 legs black ; abdomen dirty yellow. 



Imago. — Tawny, head yellow. Thorax has three brown stripes. 

 Wings with dark borders. Halteres brown, yellow at base. Abdomen 

 dirty yellow, black hairs. Legs black, femora at the base, and coxs 

 yellow. 



C. ierminalts, Lw. = C. fragilis. 



Twenty to thirty ova are laid on shoots of Salix fragilis. The 

 larvae, which are yellowish-red, live in bloated galls, and live fourteen 

 days. They pupate in the earth. When the larvae have left the 

 shoots, many scars appear between the healthy and the galled parts 

 ( - woody cells). The same process takes place which takes place at 

 the fall of the leaf in autumn. 



Imago. — Brownish-black ; antennas brown or yellow at the base ; 

 ig-jointed in $, i6-jointed in 9. Abdomen tawny beneath. Ovi- 

 duct long, last two segments yellow. Costa of wings thick, deep 

 black ; veins dark brown ; transverse veinlet, situated about the 

 middle of the first longitudinal vein ; second long, vein curved 

 towards the tip, ending at some little distance in front of the tip of 

 the wing. 



C. campanula, Miill. — Larvse form galls on the seed vessels, and 

 live also in green galls (axillary), developed from buds, or may be 

 in Lcrminal clusters on C. ruhitidifolia. Red larvae, with first segment 

 beak-like. Imago unknown. 



C. bursaria, Bremi. 



Galls on Glcdioma hederacea ; they are tubular bodies, with one pale 

 larva ; when full fed the tubes become detached and fall. Fig. 12 (2). 



Imago. — Crown of head raised conically. Reddish-yellow ; thorax 

 has three confluent black lines and dark gray hair. Abdomen dark 

 brown. Palpi yellow, crown black. Antennae brown. i8-jointed, 

 petioles shorter than joints. Legs blackish-brown, whitish beneath, 

 yellowish at their junction with body. Wings gray, scarcely iridescent, 

 dark thick gray hairs. Antennae of ? shorter than c?, petiolate as in 

 $ . Oviduct very long and yellow. 



C. veronicic, Bremi = C. chamccdrys. Inch. 

 The larvae form tufts of leaves, forming a hairy pouch on the 

 barren stems of Veronica chamcedrys. Fig. 12 (5). The larvae 

 change in these nests. Pupa figured by Winnertz in " Linnaea Ento- 

 mologica," Taf i. 



C. Crat(egi, Wtz. — T. oxyaca7ithce, Schk. 

 In white-thorn hedges we often see the shoots terminated in tufts 

 nd knobs ; each of these is a gall tenanted by several of the larvae 



