84 CECIDOMYZIDiE. 



petioles of almost equal length ; last joint generally not petiolated. 

 Fem. Jntennai Jifteen-jointecl, half the length of the body ; joints not 

 close set together, but hardly petiolated. Oviduct elongated, yellow 

 towards the tip, without valves. 



Generally distributed. (E.) Lives in the leaf-tufts of Cra- 

 tagtis Oxyacantlms and C. coccinea, and assumes the pupa state 

 sometimes there, sometimes in the earth. The shoots in white- 

 thorn hedges very often terminate in tufts or knobs, each of which 

 is tenanted by several of the grubs of this fly. 



21. Brassicse, Winn. Linn. Ent. viii. 231. 18 (1853). Nigra aut 

 nigro-fusca, palpis albidis, antennis 15-articulatis, alis limpidis, costa 

 nigra, basi halteribttsque carneis, abdomine carneo fasciis dorsahbus ni- 

 gris, pedibus subtus argenteis. Long. |— | lin. 



Wings with black veins ; subcostal vein very near the costa ; trans- 

 verse veinlet joining the middle of the subcostal vein ; cubital vein 

 convex hindward, joining the costa far from the tip of the wing ; se- 

 cond branch of the anal vein curved to the hind border. Halteres 

 flesh-colour. Male. Antenna; rather shorter than the body ; joints and 

 their petioles of equal length, with long whorls of hairs. Fem. An- 

 tennae with short whorls of hairs, not quite half the length of the 

 body ; joints cylindrical, without petioles. Oviduct elongated, yellow- 

 ish-white, without valves. 



Lives in the pods of the rape, often from fifty to sixty in one 

 pod, and goes into the earth previous to its metamorphose. 



22. Strobi, Kaltenbach, MSS.; Winn. Linn. Ent. viii. 234. 20 

 (1853). Fusca, antennis 17-19-articulatis, alis limpidis cinereo-hirtis, 

 costa nigro-fusca, luiUerihns alhis, ventre argenteo, pedibus piceis sub- 

 tus albo-micantibus. Long. l-lyV ^i"- 



Wings with pale brown veins ; transverse veinlet slender and pale, 

 joining the subcostal at two-thirds of its length ; cubital vein a little 

 bent forward at its junction with the veinlet, thence slightly curved 

 hindward, and joining the costal near the tip of the wing ; second 

 branch of the anal vein curved towards the hind border. Male. An- 

 tennce nineteen-jointed, as long as the body ; middle and apical joints 

 and their petioles of equal length. Fem. Antenyice seventeen to eighteen- 

 jointed, half the length of the body ; joints without petioles, but not 

 close-set together. Oviduct elongated, without valves ; second and 

 third joints yellowish-white. 



Lives in the fallen cones of Finns Abies. 



23. serotina, Winn. Linn. Ent. viii. 316. 97 (1853). Nifjro-fuscn, 

 capile jialpis nntennisque fuscis, his 16-17-articulatis, alis limpidis pilis 

 costaque uigris, Jtalleribiis nivels, abdomine fasciis pilosis nigris, pedibus 

 subtus albo-nitcntibus ; 3Ias, abdomine nonnunquam fulvo ; Fcem. ab- 

 domine carneo. Long. |— |^ lin. 



Subcostal vein near the eosta ; transverse veinlet very pale, joining 



