508 
Lord Walsingham on 
distinctly dilated before the apex. Exp. aL, 28 mm. Eindwings 
tawny brown ; cilia whitish, a brown dividing line near their base. 
A hdomen whitish cinereous, anal tuft whitish ochreous. Legs whitish. 
Ty])e, $ . Mus. Wlsm. 
° Hab. Colorado— Loveland, |5,000-10,000 ft., July, 
1891 ; two specimens (Smith). 
In the second specimen, although, both are in equally- 
good condition, the markings are almost obliterated, 
neither the subcostal spots, the subapical line, nor the 
discal lines being at all clearly defined but consisting 
merely of a general distribution of brownish fuscous 
scales indicating their pattern and position which so far 
as it goes is the same as in the type. 
A series received (from the same locality) since this 
description was written, exhibits considerable variation 
in the markings, some varieties approaching closely the 
narrower-winged Psedisca mediosb'iata, in these the 
median shade and transverse streaking become obsolete, 
the darker markings assuming the form of radiating 
streaks between the veins beyond and above the cell. 
In some specimens no markings whatever are apparent, 
the ground-colour becoming pale cream ochreous with 
merely some scattered fuscous scales dusted over the 
surface. 
Psedisca medio striata y sp. n. (PL XII., fig. 11.) 
Antennce biciliate (more than ^) ; whitish. Falpi projecting 
more than the length of the head beyond it ; fawn-grey, white on 
tlieir inner sides. Head and Thorax fawn-grey, the ends of the 
tegulae paler. Forewings fawn-grey sprinkled with elongate 
blackish scales, the costal margin from near the base white, a broad 
median white streak from the base to the end of the cell is furcate 
at its apex, a second narrower white streak running parallel with 
it below the fold ; from the end of the cell about six diffused ill- 
defined streaks radiate in the direction of the apex and apical 
margin, interspersed with blackish scales ; cilia white. Exp. a!., 
22 mm. Hindvnngs dark tawny brown ; cilia white with a distinct 
brown line running through them near their base. On the under- 
side the wings are all distinctly pale m^argined, the pale costal band 
of the forewings being of equal width throughout. Abdomen 
creamy whitish. Legs whitish. 
Type. S . Mus. Wlsm. 
Hab. Colorado— Loveland, 5,000 ft., July, 1891 ; five 
specimens (Smith). 
