new species of North American Tortricidse. 507 



somewhat smaller and more shining in appearance, the 

 ground-colour being more unmistakably white. 



Psedisca biplagata, sp. n. (PL XII., fig. 7.) 

 Antenna; biciliate (less than ) ; very pale fawn, the basal 

 joint, straw bchreous. Palpi projecting more than the length 

 of the head beyond it ; pale straw-ochreous, shaded along the 

 sides with fawn-brown. Head and Thorax straw ochreous. 

 Forewings rather wide, the costal margin very slightly arched, 

 apical margin convex ; pale straw ochreous with two small patches 

 of fawn-brown scales, the first above the middle of the dorsal mar- 

 gin, pointing obliquely outwards, reaching to the lower edge of the 

 cell ; the second at the end of the cell, tending obliquely outwards, 

 from near the costal in the direction of the apical margin above 

 the anal angle ; these patches are faintly outlined by shining 

 white scales, extending towards the anal angle, but scarcely distin- 

 guishable from the pale ground-colour of the wing, in which there 

 is a certain admixture of the same ; cilia pale straw ochreous, 

 tending to whitish on their outer half. Exp. al., 24 mm. Hind- 

 wings pale reddish brown ; cilia shining white. Abdomen 

 whitish ochreous. Legs whitish. 

 Type. <. Mus. Wlsrn. 



Hob. Colorado Loveland, 10,000 ft., July, 1891; 

 two specimens (Smith). 



v Pssdisca fuscosparsa, sp. n. (PL XII., fig. 8.) 

 Antennce biciliate (more than ) ; pale cinereous. Palpi pro- 

 jecting the length of the head beyond it ; whitish ochreous. 

 Head brownish ochreous. Thorax whitish ochreous, the tegulse 

 spotted with greyish fuscous scales. Forewings moderately straight, 

 not much widened outwardly ; whitish ochreous, streaked and 

 sprinkled with brownish fuscous scales, with a slight fawn-brown 

 suffusion along the middle'; the brownish fuscous scaling is more 

 noticeable about the middle of the wing-surface where, in the type, 

 it assumes the form of an ill-defined narrow band enclosing the 

 outer portion of the cell and resting on the fold at either extremity ; 

 immediately below the costal margin are a number of small 

 irregular brownish fuscous spots, and a line of these runs parallel 

 to the apical margin at a short distance from it, preceding a few 

 similar spots at the apex and along the margin itself ; below the 

 fold are also a few small brownish fuscous spots and the paler 

 fawn-brown suffusion is also here somewhat noticeable ; cilia 

 whitish ochreous touched with fuscous at the edges. The fore- 

 wings are pale margined on the underside, the pale costal band 



