170 THE CANADIAN ENTOMOLOGIST. 



ary square and one behind each eye, an 0-shaped mark surrounding the 

 base of the antennae, broadest below, interrupted above; a spot between the 

 antennae, a crescent-shaped mark on the cheeks below the eyes, its anterior 

 horn coalescing with the circle around the antennae, and the apex of the 

 palpi ; the clypeus slighty emargiiiate ; prothorax greenish-yellow, longer 

 than broad, suddenly narrowed in front just before the middle, sides 

 parallel behind the middle, a black dot at each corner and an indistinct 

 transverse band at middle ; wings hyaline, slightly annular at apex ; 

 pterostigma long, yellowish ; the longitudinal veins and the veinlets yel- 

 lowish white, except the following, which are black : the costal veinlets at 

 base and apex, the radio-subcostal cross-vein near ihe base of the wing, 

 the base of the veinlets between the first and second branches of radius, 

 the base of the second branch of radius, both series of gradate veins, the 

 base of the veinlets given off from the second branch of radius, the long 

 cross-vein in the anal angle ; in the posterior wings, the costal veinlets 

 entirely and base of the veinlets between the first and second branches of 

 radius ; twenty-six costal veinlets before the pterostigma, fourteen or 

 fifteen between the radius and its sector, nine in the inner gradate series, 

 and ten in the outer gradate series ; legs whitish, tarsi darker ; abdomen 

 green, hairy. 



Length, 1 1 mm. ; alar expanse, 30 mm. 



Habitat— Wellesley, Mass , June. 



Nothochrysa phantasvia, sp. nov. — Antennre longer than the wings, 

 white, immaculate, basal segment strongly dilated within j head yellowish- 

 white, immaculate ; clypeus emarginate ; palpi white ; prothorax green, 

 about as broad as long, narrowed in front, sides gradually widened back- 

 wards ; meso-and metathorax yellowish-white, a purplish dot each side 

 on the suture between the front and lateral lobes of the mesothorax, some-, 

 times wanting ; wings narrow, elongate, hyaline ; hind wings angular at 

 apex ; pterostigna long, white, fuscous at base ; the veins and veinlets 

 green or white, except the following, which are black : the second branch 

 of radius, the basal three or four veinlets between the first and second 

 branches of radius, at their base, a spot surrounding the apical cross-vein 

 between media and cubitus, and the gradate veins ; in some immature 

 specimens none of the veins are black; the veins and margin hairy ; hairs 

 short, white ; twenty-six to twenty-nine costal veinlets before the ptero- 

 stigma, sixteen to seventeen between the radius and its sector, eight to 

 ten in the inner gradate series, seven to nine in the outer gradate series ; 



