\ 



Tencina of Coloracfo. 301 



it is a small white spot in the cilia. The apical third of the wing is 

 somewhat dusted with white, and the apical spot is dark brown, and is 

 large, extending to the last costal and dorsal streaks (or perhaps it 

 would be more correct to say simply that the apical part of the wing, 

 behind these last streaks, is dark brown). Costal cilia brown ; dorsal 

 cilia white with a wide dark brown hinder marginal line behind their 

 middle; ciliary 'hook' dark brown, margined beneath with white. 

 Upper surface of the abdomen dark brown. Al. ex. three-eighths inch. 

 Spanish Bar. 



As already noted {see Gelechia ribe^ella) there is a Gracilaiia larvse 

 which feeds on the leaves of the wild red current, which I did not 

 succeed in rearing: 



b' 



G. populiella (n, sp.) 



Yellowish ocherous, with strong purple reflections, (ocherous or 

 purple, according to the light.) The costal triangle is only indicated 

 by a paler yellowish hue about the middle of the extreme costal 

 margin, which is also sprinkled Avith brown dots, and there is a row of 

 brown dots extending along the middle of the wing, from near 

 the base to the tip, and on one wing there are two or three small 

 ones beneath the fold ; cilia grayish brow^n with the tips brown, 

 and a dark brown hinder marginal line beyond the middle. Hind 

 wings and cilia shining, grayish fuscus ; abdomen of the same hue 

 with the hind Avings. In the single specimen before me the tibia 

 and tarsi of the forelegs are broken off, the tarsi of the middle 

 pair are white, faintly annulate with fuscus at the joints, and the 

 til)ial spurs are white ; hind tarsi and tibia whitish stained with 

 fuscus ; the legs are a little more brownish than the forewings. An- 

 tennae brown, annulate with pale yellowish. Al. ex. 7 lines. The 

 larva feeds on the leaves of poplars, folding the edge dowuAvards, and 

 feeding and perpetuating under it. This specimen was taken at an 

 elevation of about 9000 feet, near Berthouds' pass. In the same leaf, 

 on the underside, was a small tentiform mine, in which the larva 

 probably passed its first stages. 



Ornix — 0. ptdnrosellaf Chanib. 



I have not seen this species in any of its stages, but have found its 

 mine in the bush wild cherry of the mountains, both on Clear Creek, 

 at Spanish Bar, and on Fontain-qui-Bouille, near Manitou. Altitude 

 8000 feet. 



