92 CECIDOMYZID^. 



pale in some cases, brown in others, at a little beyond the middle of 

 the subcostal vein ; second branch of the anal vein forming a rounded 

 angle. Male. Antenna twenty-six-jointed; joints rather shorter than 

 their petioles. Fern. Joints of the antennae rather longer than their pe- 

 tioles. Oviduct very short, with two little somewhat rounded valves. 

 Habits unknown. 



46. mutabilis, Winn. Linn. Ent. viii. 248. 34 (1853). Fcem. 

 fusca, capite palpis humeris et pectoris lateribus flavis, antennis corporis 

 longitudine, thorace nigro-trimttato, pectore nigricante, alls subfuscescen- 

 tibus, venis fuscis, halteribus abdomineque fulvis, hoc basi nigricante, 

 oviductu brevi lamellis duabus rotundatis, femoribus nigris subtus albo- 

 flavis. Long. -| lin. 



Fern. Brown. Head, palpi, shoulders, and sides of the pectus yellow. 

 Antennas as long as the body, yellow at the base ; joints longer by half 

 than their petioles. Thorax with three black stripes. Pectus blackish. 

 Wings slightly brownish, with blackish-grey pubescence; transverse 

 veinlet at a little beyond the subcostal vein ; anal vein and its second 

 branch forming an obtuse angle. Halteres tawny. Abdomen tawny, 

 with grey hairs ; first, second, and third segments occasionally blackish. 

 Oviduct short, with two rounded valves. 



Habits unknown. 



47. sylvatica, Winn. Linn. Ent. viii. 249. 35 (1853). Fcem. 

 nigra, capite thoracis lateribus abdomineque fulvis, hoc fasciis nigris, 

 palpis halteribusque pallidis, thorace e pilis flavescentibus bivittato, alts 

 limpidis, venis fuscis, oviductu corporis longitudine lamellis nullis, pedi- 

 bus fuscis. Long, f lin. 



Fern. Black. Head, sides of the thorax, and abdomen tawny. Palpi 

 pale. Antennae blackish-brown, half the length of the body ; joints 

 about five times the length of their petioles. Thorax with two stripes 

 of yellowish hairs. Wings limpid, deeply ciliated ; veins brown ; trans- 

 verse veinlet joining the middle of the subcostal vein ; second branch 

 of the anal vein curved to the hind border. Halteres pale. Abdomen 

 with black bands. Oviduct as long as the body, without valves. Legs 

 brown. 



Habits unknown. 



48. Polypori, Winn. Linn. Ent. viii. 249. 36 (1853). Flavo- 

 fusca, capite proboscide palpisque flavo-albis, antennis fuscis basi albis, 

 thoracis lateribus pectore halteribusque fulvis, alis subcinereis, abdomine 

 rufo, femoribus fulvis, tibiis flavis, tarsis fuscis ; Mas, antenuis corpore 

 duplo longioribus, alis subcinereis ; Fcem. antennis corpore vix longio- 

 ribus, oviductu brevi lamellis duabus parvis flavescentibus, alis sub- 

 flavescentibus. Long, -f- lin. 



Wings with black pubescence; veins blackish, or dark brown; 

 transverse veinlet joining the middle of the subcostal vein ; anal vein 

 and its second branch forming an obtuse angle. Male. Antennae twice 



