74 AN ACCOUNT OF BRITISH FIIES. 



C. onobrychidis, Bremi. 



The larvffi live gregariously, and, according to Bergenstamm, " in 

 hiilsenformig zusammengefalteten Blattern von Astragalus onobrychis 

 und asper, Medicago falcata^ sativa, lupulina und Onobrychis sativa." 

 They pupate in the ground. 



Bremi gives a description of this species which answers nearly to 

 the following : Head black, also the antennae, which in both sexes 

 are strongly hairy; in the <$ they are 14-jointed and as long as the 

 body, the spherical joints being far apart ; in $ antennae only half the 

 length of body, 12-jointed. Thorax dark and shiny; sides of thorax 

 and pectus reddish, halteres also reddish-brown. Wings limpid, nerves 

 deep black, first and second longitudinals strong, pubescent. Legs 

 brownish-red, tarsi pale. The ? is stout and reddish, each segment 

 having a black band on it ; ovipositor thin and pointed ; the c^" is 

 slender and almost black, on account of the development of the 

 black bands on the abdomen ; ventral surface of abdomen tawny in 

 both sexes. 



C. foliorujn, H. Lw. = C. fulcorum, Macq. 



This is a somewhat rare gnat, the larvae living in a small-sized 

 gall on the leaf of the wormwood, Artemisia vulgaris. 



The imago. — $ brown ; bases of wings and body red, the latter 

 having two rows of dark spots. Antennas 15-jointed. Wings 

 brownish-gray, first longitudinal vein very strong, second quite straight, 

 ending near tip of wing; wing fold like a vein. Legs slender and 

 brownish. Points of the tarsi brow.n. I can find no record of the ? . 



C. plicatrix, Lw. 



The larvae live gregariously when young, and curl up the leaves of 

 Rubus ccEsius and pass to the ground before metamorphosing. 



Imago. — Dark brown, sometimes with a reddish tinge. Abdomen 

 red, with dark brown rows of scales. Antennae 14-jointed; each 

 joint has a double row of hairs, the upper row the longer ; antennae 

 red at base, brown above, joints sessile in ? . Wings short and 

 broad. Third longitudinal ends a long way in front of tip of wing. 

 Legs brown, not very slender. The following are also British species 

 belonging to this sub-genus : 



C. piloselhe, Binnie. = C. potent ill u\ F. C. viohe, F. C. alpina, 

 Lw. C. tiibicola, Keif. 



