THE CANADIAN ENTOMOLOGIST. 99 



distinct, hairy, and all of nearly equal length, color dull brownish yellow ; 

 Mesothorax black, shining, smooth, parapsidal grooves not deep, the two 

 short median lines very obscure, a short faint line over the base of each 

 anterior wing; Scutellum black, deeply and somewhat regularly grooved and 

 ridged, fovese large shallow and finely rugose; Abdomen black, smooth, ven- 

 tral sheath clear, shining, brown ; Wings of a dusky hue, veins dark red, 

 areolet large, distinct, radial area opeu, but the second transverse vein extends 

 alone: the margin of the wing one third of the length of the area and the 

 radial vein is thickened at the margin of the wing and in most specimens 

 throws back a very short branch along the margin of the radial area, show- 

 ing a tendency towards a closed radial area. Leys a clear dark amber with 

 base of trochanters and middle of femora and tibise shining, brown. Length, 

 dry specimens, .11. 



$ , smaller, 14-jointed antennae, third joint deeply incised, color of an- 

 tenna3 and legs slightly darker than £. Length, .09. 



I have numerous specimens ^ and £ though the <j> £ are far more numer- 

 ous than the £ $ . This species is remarkably distinct from the three species 

 of N. Am. Diastrophus hitherto described, and in the darker veins and the 

 partially closed radial area from the species described below. 



Looking over my collection of galls, I find a gall from the stalk of Rubus 

 strigosus and several gall insects reared from the same. The gall is an inch 

 long, and three-fourths of an inch thick — an abrupt swelling involving the 

 whole circumference of the stalk. Quite a large number of insects seem to 

 have escaped from it, though many of them were parasites, 1 have only five 

 specimens of the true gall-fly, and these are all females. The description is 

 as follows : — 



Diastrophus turdigus, N. Sp. 9 . Head, black, shining ; Antennae, red- 

 dish brown, 13 jointed, joints of nearly equal length, but longer, less hairy 

 and less distinctly annulose than in D. radicum. Upper part of the face 

 rough, lower with fine grooves, converging to the mouth ; Mesothorax, smooth, 

 black and shining, parapsidal grooves narrow, intermedial Hues very short, 

 and only seen in a favorable light. A faint liuear depression over the base of 

 the anterior wings. Scutellum, finely wrinkled, fovea? deep, smooth ; Pleura 

 finely striate; Abdomen, black, smooth, but the ventral sheath reddish brown; 

 Wing*, dusky, veins distinct, but not heavy, areolet very small and in some 

 individuals obsolete, radial area open — the radial vein stops short of the 

 margin of the wing — cubital vein slender, reaching to the first transverse; 

 second transverse spreads out at the base of the radial area iuto a dark red- 

 dish brown cloud ; Legs, dark amber, changing in the trochanters and middle 



of the femora and tibia?, to a clear dark brown. Length, dry specimens, .12. 

 Five ??,do U. 



