P^DISCA. 
51 
Fore wings cinereous brown^ somewhat mottled witli wliitisli and fuscous scales, ferruginous 
towards the apex : the costa rather arched, with an appressed fold in the male near the base ; 
apical margin slightly indented, scarcely oblique; a rather square white spot on the middle of 
the dorsal margin, interrupted by a few brownish scales, in the female with a white streak 
joining it obliquely from the costa : some whitish abbreviated streaks from the costa beyond 
the middle, with two steel-blue wavy sti'eaks meeting at the anal angle and enclosing three 
black lines in the ferruginous ocellated spot. Hind wings fuscous brown. Legs cinereous 
brown, spotted with whitish. 4 c? . Expanse of wings 13 millims. 
Sonoma County, California, May 23rd, 1871 ; and on Rouge Eiver, Oregon, May 7th, 
1872. 
This species is nearly allied to P. trigeminana, Steph. (Staiid. and Wocke, 1101), but is 
slightly smaller, the fore wings shorter in proportion to their breadth, the dorsal spot whiter, 
the ocellated patch less distinctly visible, the hind wings darker, and the palpi rather longer 
and more conspicuous. I am informed by Prof. Zeller that he has a specimen of the true 
P. trigemmana from California ; and Prof. Fcrnald has also a specimen from the same locality 
which approaches even more nearly to it than my P. hirsutana. I have two specimens in my 
own collection, taken in California, which I believe to be P. trigeminana ; but I had long since 
made a note of their distinctness from the species above described, which appears to be very 
constant in its characters. 
Since writing the above. Prof. Zeller has most generously presented to me the specimen 
above referred to, which exactly resembles in colour and shape one of my supposed P. trigemi- 
nana from California. It is, however, much larger. I am by no means convinced that it is 
not another good and distinct species. In any case it seems distinct from P. hirsutana. 
Paedisca improbana. (Plate LXXII. fig. 2.) 
SciapMla improbana, WaVcer, Cat. Lep. Het. xxviii. p. 337. 
Pasdisca difiinana, ^Yall•er, Cat. Lep. Het. xxviii. p. 378. 
Palpi projecting about the length of the head beyond it ; the second joint clothed, obtuse- 
apical joint conical and exposed. Fore wings — three times as long as wide, with the costa 
scarcely arched ; the apical margin obliqvie ; apex slightly rounded — dark ashy brown, inclining 
to fuscous, with a slight purplish gloss and some abbreviated brownish-fuscous costal streaks 
and indistinct transverse strigge. There is a brownish-fuscous rather mottled basal patch 
clearly defined at its outer edge, where it forms a bold subacute angle on the middle of the 
cell, nearly reaching an excrescence projecting from the inner edge of an indistinct oblique 
fascia of the same colour, which runs from the middle of the costa to the anal angle ; two 
small brownish-fuscous spots are situated about the middle of the dorsal margin. Hind wings 
pale brownish : cilia cinereous whitish, with a slender dark line near their base. Type ? , not 
S as stated by Walker. Expanse of wings 18 millims. 
St. Martin's Falls, Albany River, Hudson's Bay. Presented by Dr. Barnston. 
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