NORTH AMERICAN EEPIHOPTERA. 
119 
.4cemf, must therefore be used for the species heretofore referred to 
Perigrapha . 
The genus Perigrapha will he re])resented in our fauna by 
I*, priina ti. sp. — Deep bluish asli-gray, with a fuscous powdering. Front of 
head and base of collar discolorous yellow fuscous; patagise obscurely black mar- 
gined B;isal line obscurely marked, scarcely traceable. T. a. line geminate, 
fuscous, evenly oblique outwardly. T. p. line geminate fuscous, interrupted, 
quite faint, evenly bisinuate. A vague, narrow fuscous shade through the centre 
of the median space. Costal half of basal space paler ash-gray. Claviform 
wanting. Ordinary spots large, subequal, oblong, oblique, touching, but not quite 
confluent inferiorly, narrowly fuscous margined, filled with paler gray, reniform 
somewhat stained with reddish. Beyond the middle of the s. t. space the wing 
is much paler gray, contrasting asiainst the bluish of the rest of the wing; the 
irregular faint s. t. line traceable by a powdering of black scales. A series of 
blackish terminal lunules. Secondaries even, smoky fuscous. Beneath, smoky 
brown, secondaries pale powdered, both wings with an outer line and discal spot. 
Expands 1.20 inches; 30 mm. 
Hah . — Sierra Nevada, Cal. 
A single female specimen from Mr. Hy. Edwards in which the 
antennte are lengthily serrate or very shortly pectinated. 
The large ordinarv spots and discolorous pale terminal space, 
combined with the generic characters, will render this species easily 
recognizable. \ \ 
Strotcliia variabilis n. 'sp. -Ground color dark ash-gray with black 
powderings. Head and front of collar umber brown, collar wdiite tipped, with a 
crested black line. The small thoracic tuftiugs and the abdominal tufts blackish 
brown to black. Abdomen dark fuscous. Basal line geminate black, evident. 
T. a. line pale, geminate on costa, obliquely and regularly outcurved to vein 1, 
and agaiT) outcurved below that vein. T. p. line rather indefinite, inw'ai’dly de- 
fined by a variably distinct lunate black line, wddely outcurved over cell, and as 
deeply incurved below, so that the median space on inner margin is only half 
the width through the cell. This median space may be coucolorous, only slightly 
darker, bright umber-brown, or almost black. The claviform is w'anting. Or- 
bicular large, rather irregularly oval, oblique. Reniform large, kidney-shaped, 
both the spots narrowiy black ringed, almost coucolorous, suffused with reddish, 
or nearly white, contrasting. S. t. line powdery gray, irregular, vague, marked 
opjiosite the anal angle with a more evident blackish lunule, follow'ed by ocher- 
ous or paler yellow scales. S. t. space slightly darker costally. A series of small 
terminal dots, beyond wiiich the fringes are cut with pale gray. There is a short, 
curved basal black Hue which does not extend to the t. a. line, and the veins are 
all black marked. Secondaries whitish, quite heavily black powdered, with 
.soiled veins, a blackish discal lunule, and a blackish marginal line. Beneath 
pale, with black powderings, the primaries darker, both wings with a dusky 
outer line and discal lunule; secondaries also with a marginal line. On the pri- 
maries the outer line is not complete and may be entirely wanting, and the discal 
spot varies in size and distinctness. Expands 1..52 — 1.(10 inches ; 38 — 40 mm. 
Hah . — Colorado (Bruce). 
