THE CANADIAN ENTOMOLOGIST. 95 



what ma)- he termccl a half open and perfectly radial area is formed. The 

 anal vein is sometimes branched or forked at the tip. 



Length-^hody .14, wing .16, antennce .oS. Dcs. from living speci- 

 mens, (lalls received from Prof E. T. Cox. of Tucson, Arizona. 



DiASTROPHUS SIMII.IS, n. sp. 



Cralls on Nepeta glecJioiiia. sim])le or compound ; the simi)le ones are 

 round and have a single cluster of larval cells in the centre : the compound 

 are extremel)' irregular in form and size, and have two or more distinct 

 clusters of cells. The round galls var)- in size from ^ to ^ of an inch 

 in diameter, and contain from one to six and even more round larval cells. 

 The cells in dry galls are held in place by coarse fibres that are attached to 

 the cell and to the extremel)- thin and almost paper-like outside covering 

 of the gall. From galls that lie on the ground through the winter the out- 

 side quite often entirely disaj^pears, and the bleached fibres surrounding 

 the larval cells look like little burrs. The galls grow on the leaves, petioles 

 and occasionally on the stems of the plant. The plant is not common in 

 this place, but wherever T liave seen it the galls are also found. Aery fine 

 specimens have been sent to me from Long Island. This sj^ecies does not 

 seem to differ very much from D. glechomce. found in Europe, and ma)- be 

 identical. The plant is supposed to have been introduced from Europe, 

 and with it the insect may have come, but such descriptions as I have 

 found of D. glcdiomcB are not sufficiently full to enable nie to decide as to 

 their identity, and I have some very good reasons to believe them distinct. 



(Jail-fly : Head black, finely rugose on the vertex. Ocelli small, close 

 together, and almost linear in position. Face rough, broadly carinate. 

 Mandibles black. Antennje long, slender, thirteen-jointed with faint traces 

 of a suture in the last joint ; 2nd one-half as long as the ist : 3rd to the 

 12th inclusive of equal length ; 13th one-third longer than the preceding. 

 I'he head hairy on the posterior side. Thorax black and shining, but when 

 highly magnified it presents a beautifully crackled surface. The two par- 

 apsidal grooves broad and smooth, narrowly convergent on the scutellum. 

 Scutellum unevenly and roughl)- rugose. Fov?e large and deep, separated 

 by a low smooth ridge. Legs of a uniform reddish brown, ungues black. 

 There is on the middle of the posterior side of the posterior pair a rather 

 dense tuft of hairs much longer than on the other legs and reminding one 

 of the tufts found similarly situated on certain species of bees. 



Wings hyaline : veins slender, pale yellowish brown. Areolet wanting, 



