CECIDOMYIA. 89 



37. bursaria, Bremi, Denkschr. Schw. Ges. Naturw. 51. 10 (1847) ; 

 Winn. loem. flava, vertice thoracisque vittis nigris, aiitennis fuscis 

 18-articulatis basi flavis, alls subcinereis raargine (costali praesertim) 

 nigro, halteribus fuscis basi flavis, abdoraine e pilis nigris fasciato, 

 pedibus nigro-fuscis subtus flavis. Long. 1 lin. 



Yellow. Antennae brown ; joints about four times the length of their 

 petioles. Thorax with three contiguous shining black stripes. Wings 

 greyish, with blackish-grey pubescence ; veins dark brown ; transverse 

 veinlet very slender and pale, joining the middle of the subcostal vein ; 

 cubital vein at first straight, afterwards convex forwards, joining the 

 costa at a moderate distance from the tip of the wing ; second branch 

 of the anal vein slightly curved between its base and the hind border. 

 Oviduct elongated, yellow, without valves. 



Lives in the pyramidal hairy galls on the upper sides of the 

 leaves of Gleckoma hederacea. 



38. Urticae, Pen-is, Ann. Soc. Ent. Fr. ix. 401 (1840); Loew ; 

 Winn. Fulva, capite flavo, antennis fuscis 16-18-articulatis basi flavis, 

 thorace vittis tribus nigro-fuscis, alls fere limpidis margine (costali prae- 

 sertim) nigro, halteribus fuscis basi flavis, abdomine sordide flavo e pilis 

 nigris fasciato, pedibus nigris, femoribus basi coxisque flavis. Long. 



l-f lin- 



Tawny. Head yellow. Antennae brown, yellow at the base. Thorax 

 with three blackish-brown stripes. Wrings almost limpid; the borders 

 (especially the costal) black ; veins brown ; transverse veinlet slight, 

 very pale, joining the middle of the subcostal vein ; cubital vein bent 

 upward at its junction with the veinlet, joining the costa far from the 

 tip of the wing ; second branch of the anal vein joining the hind border, 

 and forming an obtuse angle. Halteres brown, yellow at the base. 

 Abdomen dingy yellow, with borders of black hairs. Legs black; 

 femora at the base and coxae yellow. 



Lives from June to October in the galls on the leaves and leaf- 

 stalks of Urtica dioica ; changes to a pupa in the earth. 



39. Pyri, Bouche; Loew; Winn. Linn. Ent. viii. 242. 29 (1853). 

 Nigro-fusca, palpis fusco-flavis, antennis fuscis 15-16-articulatis, alts 

 limpidis, pilis nigro-cinereis, costa nigra, halteribus fuscis, abdomine 

 carneo fusco-fasciato, pedibus piceis subtus albo-nitentibus. Long, f- 

 1 lin. 



Blackish-brown. Wings limpid ; subcostal and cubital veins black ; 

 transverse veinlet large, rather pale, but distinct, joining the middle of 

 the subcostal vein ; cubital vein slightly curved in the middle, straight 

 from thence to the tip, which joins the costa at some distance from 

 the tip of the wing ; second branch of the anal vein curved to the hind 

 border. Male. Antennae most generally sixteen-jointed, as long as the 

 body; joints and their petioles of equal length. Fern. Antenna? most 

 generally fifteen-jointed, rather more than one-third of the length of the 



VOL. IV. N 



