114 CECIDOMYZID^E. 



half of the wing, running close to the first fork of the subanal, which 

 is whitish and indistinct ; second branch curved to the hind border 

 very abruptly, and forming an almost right angle. Halteres and legs 

 whitish, tire latter long and slender. 



Bare. In the British Museum. (E.) 



118. Tremulse, Winn. Linn. Ent. viii. 273. 65 (1853). Nigro- 

 fmca, capite thoracisque lateribus camels, alis amplis cinereis nigro- 



cinereo-pilosis, venis fuscis, abdomine incisuris carneis in immaturis 

 toto carneo, pedibus subtus albo-nitentibus ; Mas, antennis fuscis 26- 

 articulatis corpore paullo longioribus, articulis duplicatis petiolatis ; 

 Fcem. antennis nigro-fuscis corpore multo brevioribus, articulorum pe- 

 tiolis brevissimis, abdomine carneo fasciis nigris, oviductu brevi lamellis 

 nullis. Long. 1-H lin. 



Blackish-brown. Head, sides of the thorax, and sutures of the abdo- 

 men flesh-colour. Wings grey ; transverse veinlet situate a little before 

 the middle of the subcostal vein ; anal vein and its second branch 

 forming a rounded nearly right angle. Male. Antennae brown, twenty- 

 six-jointed, a little longer than the body. Fern. Antenna3 blackish- 

 brown, much shorter than the body ; joints about six times the length 

 of their petioles. Abdomen flesh-colour, with black bands. Oviduct 

 short ; first segment tawny ; second and third yellow, without valves. 



Lives in galls of various forms on Populus tremula ; changes 

 to a pupa in the earth. 



119. dolosa, n. Fcem. nigra, antennis corporis dimidio paullo 

 longioribus, alis cinereis, venis nigris, abdomine piceo, oviductu brevi. 

 Long. H ; alar. 3 lin. 



Black. Antennaj twelve-jointed ?, moniliform, verticillate-pilose, 

 rather more than half the length of the body ; joints conical, single, 

 with very short petioles. Wings grey, pubescent, ciliated ; veins black ; 

 subcostal vein much more than half the length of the wing ; cubital 

 nearly straight, ending at very little behind the tip of the wing, with 

 a very oblique veinlet between it and the cubital ; subanal distinct, 

 straight ; first branch of the anal very indistinct, running at some dis- 

 tance from the subanal ; second branch curved very abruptly to the 

 hind border. Abdomen dark piceous. Oviduct short. Legs moderately 

 long, rather slender. 



Bare. In the British Museum. (E.) 



120. notabilis, n. Mas,fusca, capite antennisque nigris, his cor- 

 poris longitudine, scutello pectore thoracisque vittis duabus testaceis, alis 

 cinereis, venis nigris, halteribus ventre pedibusque testaceis. Long. 1 ; 

 alar. 3 lin. 



Male. Brown. Head black. Antennae black, twenty-jointed, mo- 

 niliform, verticillate-pilose, as long as the body; joints short, alter- 

 nately single and double, rather longer than their petioles. Thorax 

 with two pale testaceous stripes. Scutellum and pectus testaceous. Wings 



