60 
TOETEICIDiE. 
conspicuous one being about the middle, extended towards the rather shining white ocellated 
siwt, which contains two black streaks, and is surrounded by a cinereous shade : an oblique 
abbreviated cinereous streak above the dorsal margin, before the middle of the wing, is pre- 
ceded by a pale reddish ochreous shade along the base of the dorsal margin : cilia white, 
tipped and dusted with cinereous. Hind wings whitish with a faint rosy tinge ; vein 4 pre- 
sent in the form of a short fork from vein 3 very near the margin. 1 (S , 1 ? • Expanse of 
wings 15 millims. 
September 3rd, 1871, Siskiyou County, California. 
Semasia parvana. (Plate LXXIV. fig. 1.) 
Palpi scarcely longer than the head, greyish above, fuscous at the sides ; antennse greyish 
fawn. Fore wings — three times as long as wide, the apical margin slightly concave — whitish 
ochreous with a slight fawn-coloured tinge, streaked and dusted with cinereous ; some abbre- 
viated streaks along the costa, that in the middle being the most conspicuous ; an irrorated 
cinereous shade along the dorsal half of the wing, extending to the rather ochreous ocellated 
spot, which contains some lustrous white scales and two black streaks : a cinereous line along 
the apical margin before the base of the cilia, which are ochreous white, dusted with cinereous. 
Hind wings very pale greyish white ; cilia white. 2 J . Expanse of wings 11^ millims. 
April 1872, North Oregon. 
This species is very like Semasia temdana in general appearance, but is smaller and rather 
more ochreous ; moreover the venation of the hind wings is different, vein 3 having no branch 
near the hind mai'gin as in that species. 
Semasia stramineana. (Plate LXXIV. fig. 2.) 
Head, palpi, antennae, and fore wings pale straw-colour, the latter more than three times 
as long as wide ; the apical margin slightly concave ; the male with several short oblique 
brown streaks from the costa, alternated with shining w'hitish towards the apex; a slight 
ochreous shade before the sublustrous ocellated spot, which contains the usual two black 
streaks ; a narrow brown line along the apical margin, and a line of fuscous scales at the base 
of the cilia. Female — fore M'ings nearly unicolorous ; the costal streaks and the line along the 
apical margin scarcely indicated. Hind wings whitish; vein 4 absent. 1 c?, 1 ? . Expanse 
of wings 11^ millims. 
Denver, July 1872. - 
Semasia minimana. (Plate LXXIV. fig. 3.) 
Head whitish ; the palpi whitish, touched with greyish fuscous at the sides ; antennae 
whitish. Fore wings — more than three times as long as wide, the apical margin very oblique. 
