CECIDOMYIA. 85 



the middle of the subcostal vein ; cubital vein convex behind, joining 

 the costa at some distance from the tip of the wing ; second branch of 

 the anal vein curved towards the hind border. Male. Antennae sixteen 

 to seventeen-jointed ; as long as the body ; joints as long as their pe- 

 tioles. Abdomen occasionally tawny ; hind borders of the segments 

 with black hairs. Fern. Antennas sixteen -jointed, as long as the head 

 and the thorax together. Abdomen flesh-colour ; hind borders of the 

 segments with black hairs. Oviduct elongated, whitish, without valves. 

 Lives in the tips of the shoots of Hypencum hwnifumm, and 

 changes to a pupa in the earth. 



24. circumdata, Winn. Linn. Ent. viii. 226. 14 (1853). Fusca, 

 capite flavo, antennis fuscis 13-14-articulatis basi flavis, thoracis late- 

 ribus scutello pectore et metathorax flavis, alis ovatis subfuscescentibus 

 nigro-hirtis, halteribus albidis apice nigro-fuscis, abdominis incisuris 

 basi ventreque flavis, abdomine sordide flavo incisuris albidis, pedibus 

 nigro-fuscis subtus pallidis. Long. \ lin. 



Veins of the wings blackish-brown ; transverse veinlet very pale and 

 small, joining the middle of the subcostal vein ; cubital vein much bent, 

 forward at its junction with the veinlet, beyond which it is slightly 

 curved forward, and ends at hardly in front of the tip of the wing; 

 second branch of the anal vein forming an obtuse angle, and joining 

 the hind border. Male. Antennas fourteen-jointed, as long as the body ; 

 joints twice the length of their petioles. Fern. Antennas thirteen- 

 jointed, half the length of the body. Oviduct very short, with two 

 small, rounded, whitish valves. 



Lives in the leaf-tops or tufts of Cratagus Oxyacantha, and 

 changes to the pupa state in the earth. 



25. Betulse, Kalt. MSS.; Winn. Linn. Ent. viii. 234. 21 (1853). 

 Obscure citrina, antennis fuscis \%-13-articulatis, thoracis dorso nigro- 

 fusco, alis limpidis ant lacteis, pilis venisque pallidis, halteribus albis, ab- 

 domine nonnunquam fuscescente, pedibus pallide flams. Long. T^^-TO 

 lin. 



Wings limpid or icJtitisJt ; transverse veinlet filiform, colourless, situate 

 at a little before the middle of the subcostal vein ; cubital vein almost 

 straight, but slightly curved hindward towards the tip, which joins the 

 costa near the tip of the wing ; second branch of the anal vein curved 

 towards the hind border. Male. Antennae twelve- to thirteen-jointed, 

 rather more than half the length of the body ; joints longer by half 

 than their petioles ; apical joint with a very short petiole. Fern. An- 

 tenna twelve-jointed, one-third of the length of the body ; joints sessile. 

 Oviduct moderately long, without valves ; third segment white. 



Appears in March, April, or May, having lived through the 

 winter in the preceding year's female catkins of Betula alba. 



26. Galeobdolontis, Kaltenbach, MSS. ; Winn. Linn. Ent. viii. 

 238. 25 (1853). Foem. pallide flava t antennis fuscis 16-articulati.s, 



