niveilinca. 
ralriata. 
quadriden- 
tata. 
fhitea. 
flavidens. 
laetificans. 
plagigera. 
oblongistig- 
ma. 
ridingsiana. 
hollemani. 
anderci. 
ntristrigata. 
collocata. 
nevada. 
xastci. 
38 EUXOA. By Dr. M. Draitdt. 
marginal area uniformly darkened, proximallv bordered by the yellow undulate line; the maculae are white- 
ringed in a darkened ground. Hindwing whitish with a broad, smoky grey marginal band. Expanse of wings: 
26 to 32 mm. Dakotah, Canada (Alberta). 
E. niveilinea Grt. (6 b) is likewise not dissimilar to recula (4 i), of a yellowish brown with a white 
subcostal streak, median and its branches, maculae and submedian stripe, the ring-macula being obliquely 
elliptical; the grey posterior transverse line is finely dentate like the brownish undulate line. Hindwing as in 
recula. From Nebraska and Kansas to Texas, Colorado, and New Mexico. — rabiata Sm. is a smaller form 
of a. darker colouring, and the white line on the shoulder-covers is not so distinctly prominent; forewing 
dusted with a deep smoky brown on a dark yellowish ground. Canada, South Dakotah, Colorado. 
E. quadridentata Gr. & R. (= pugionis Sm.) (6 b) differs from the preceding by much more con¬ 
trasting forewings being marked with a bright yellowish white on a dark reddish or greyish-brown ground, and 
by the reddish ochreous-yellow collar; the undulate line consists of small black sagittae. Canada to Colorado 
and California. — flutea Sm. has spotted transverse lines interrupted on the veins; the black, subterminal sagittae 
are all equally long and arranged in a straight line; compared with the long abdomen, the wings seem to be 
shorter and narrower. From the Sierra Nevada. 
E. flavidens Sm. (6 b) likewise resembles the preceding species, but it is darker, the light markings 
are finer, the ring-macula small, round, pupilled brownish like the reniform macula, the cell before it and behind 
it filled rip with black. Hindwing somewhat darker, in the $ quite dark brown. Colorado to New Mexico and 
Arizona. 
E. laetificans Sm. ( = masculinus Sm. (4 i) differs from flavidens by a still darker, dull brown colour, 
and a more ochreons, narrower costal-marginal streak; the maculae are smaller, more ochreous-brown; the whole 
marginal area is not lighter, but darker, only the undulate line is oclireous. Hindwing of a pure white. From 
Colorado. 
E. plagigera Morr. (= olivalis Grt.) (4 i as olivalis, 4 k) is dusted blackish-brown, olive-brown or grey 
with a whitish costal-marginal streak. The ring-macula is very narrow and oblique, like the reniform macula 
ringed whitish and encircled with black; the light submedian ray is narrow, more grey like the undulate line, 
before which there are black sagittae. Hindwing whitish, dusted with brown. United States to Colorado, Cali¬ 
fornia. 
E. oblongistigma Sm. (= agema StrecJc.) (4 k) is recognizable by lighter brown wings with a black 
basal ray, quite extinct transverse lines, the cell being before and between the maculae filled up with black, 
otherwise very much like all the preceding species, likewise with their light submedian ray. Hindwing of a 
darker brownish grey. Montana to California and Colorado. 
E. ridingsiana Grt. (= maimes Sm.) (4 k) is very much like oblongistigma, but it has no long, oblique, but 
a small round ring-macula, and the ground between the maculae encircled with a somewhat flesh-coloured 
tint is not black. Submedian streak and undulate line likewise flesh-coloured. Hindwing brown, the veins and 
margin still darker, with white fringes. Colorado, New Mexico, Arizona. 
E. hollemani Grt. (4 k) is greyish-brown, below and behind the cell reddish, with a black basal ray 
and a light grey costal-marginal streak; the two upper maculae more or less confluent in the cell which is 
filled up with black; no transverse lines at all, the veins in the marginal area somewhat darker. Hindwing 
white with brownish veins and margin, in the § quite brown. Colorado, Nevada, California, Arizona. 
E. andera Sm. is marked almost the same as hollemani (4 k), but very much lighter, of a light bluish- 
grey with a light costal margin and a brownish shade in the disc; macidae confluent, the lower half of the 
cell black; marginal area darkened with small blackish spots between the veins. Expanse of wings: 28 to 
35 mm. Utah, Colorado, Washington, Arizona. 
E. atristrigata Sm. (4k) is ashy-grey, thickly strewn with black, with extinct transverse lines; the 
oblong, narrow ring-macula flows together with the reniform macula,the cell between being black;a light patch 
extends from the cell-end to the apex; the radial and median branches are more or less bordered with whitish; 
black antemarginal sagittae, particularly in the form collocata Sm. (4h) which shows a much darker red-brown 
ground-colour. British Colombia, Colorado. 
E. nevada Sm. (= floramina Sm.) (6 b) differs from the similar form collocata (4 k) of the preceding 
species by its more brownish-grey ground-colour, and is abundantly strewn with black; a black basal ray 
is present; the maculae are small, filled up with brownish and subcostally connected by a small white stripe, 
the cell before it and between being black; from the reniform macula a blackish wedge extends to the margin. 
Hindwing white, towards the margin brownish. Nevada, California. 
E. xasta B. <Sb McD. (6 b) is similar to hollemani (4 k), but much lighter, the two upper maculae are 
not confluent, but distinctly separated, the cell between them not black, but only somewhat darker than the 
ground; the. coniform macula is likewise distinct, the basal ray less developed. The ground-colour is more 
oclireous-yel 1 o wish, at the costal and proximal margins grey; the veins in the darkened marginal area are blackish, 
