SCOTOGRAMMA. By Dr. M. Dratjdt. 
89 
of the median shade, the undulate line is only a very faint shade; fringes not speckled. Hindwing dark, fringes 
and basal area lighter. Expanse of wings: 35 mm. Colorado. 
S. alta B. & Benj. differs in the exterior from oregonica by grey forewings with a yellowish tint, alia. 
without any reddish-brown admixture and more prominent markings. From Alberta. 
S. subalbida B. & Benj. is likewise not dissimilar to typical oregonica, but it is smaller, with an subalbida. 
almost white under surface and different genital organ. Alaska. 
S. inconcinna Sm. has bluish-grey forewings thickly strewn with a brownish black, in the discal area inconcinna. 
dusted with black, with black transverse stripes being bordered with grey, the posterior stripe dentate with 
white dots on the veins; the large grey maculae are surrounded with black and pupilled darker; undulate line 
grey, indistinct, with darker small sagittae in front of it. Hindwing brownish-grey. Colorado. 
S. fervida B. <£• McD. (14 b) is a most variable species closely allied with trifolii from which it fervida. 
is easily discernible by the very much expanded lower end of the reniform macula, which is pupilled bluish- 
black, and by the much flatter undulate line without a distinct W. The ground-colour varies from greyish- 
brown to red-brown, strewn and marked with bluish-black, but mostly very indistinctly, the transverse lines 
well marked double, filled up with a lighter colour; marginal area intensely dusted with bluish-black. Hindwing 
brownish-grey with a broad marginal darkening, in the $ still darker. From New Mexico. —- f. proxima proximo,. 
B. <Sc Benj. is much lighter, more brownish-grey. Utah. 
S. gatei Sm. (14 b) is very similar to fervida, but it has darker forewings and much lighter hindwings; gatei. 
the undulate line exhibits opposite the cell-end a deep angle filled up with a darker colour. The genital organ 
exhibit an exterior extraordinarily different from that of fervida, which has narrow rounded valval ends, 
whereas in gatei they are broad quadrangular extended into 2 projecting angles. Expanse of wings: 30 mm. New 
Mexico. 
S. castrae B. <£• McD. (14 b) has brown forewings suffused with reddish pink, with a contrastingly castrae. 
prominent marking, double transverse lines filled up with reddish pink, the maculae filled up with pink, the 
reniform macula pupilled dark; undulate line pink, farther below divided into pink triangles which are inside 
bordered with black, with the apex turned towards the base. Hindwing yellowish brownish-grey, with a broad 
darker marginal band. New Mexico. — The form ultra B. da Benj. is less contrasting, without a lighter discal area, ultra. 
S. fulgora B. & McD. (14 c) is similar to D. hadeniformis (13 i) from which it differs by the plainly fulgora. 
rounded frontal projection. Forewing dark smoky grey with a faint basal ray and effaced double transverse 
lines; the large coniform macula is filled up with dark, the upper maculae are surrounded with white, the ring- 
macula oblong-oblique, the reniform macula in the lower half filled up with dark; the prominently white undu¬ 
late line has a distinct W and in front of it in the centre dark sagittae. Hindwing whitish, at the margin smoky. 
Utah, California. 
S. repentina Morr. On the light grey forewing the discal area is darkened blackish-brown; both the repentina. 
transverse lines are double, undulate, the posterior line distally shaded dark; the median line is strongly dentate 
the large maculae are light, the reniform macula somewhat darkened, indistinctly defined; the undulate line 
is yellowish brownish-grey, proximally shaded dark, without a distinct V/. Hindwing brownish-grey, towards the 
base lighter. Expanse of wings: 33 mm. New Jersey*). 
S. ptilodonta Grt. (14 a) has brownish-ochreous forewings, thickly strewn with a darker shade, with piilodonia. 
a black basal ray and indistinct transverse lines being only better marked at the costal margin, the posterior 
line double, towards the margin with black and white dots on the veins.; the large maculae are surrounded 
with black, the reniform macula below pupilled dark; undulate line indistinctly lighter, proximally with small 
black sagittae, behind it the marginal area is darkened. Hindwing of a pure white. Arizona. 
S. defessa Grt. (13 i) resembles ptilodonta, but it is larger on an average, less strewn with dark, the defessa. 
transverse lines almost only traceable at the costal margin, the posterior line reduced to dots on the veins; 
the maculae are small, the ring-macula above and below open. Hindwing in the marginal area and on the veins 
dusted with a brownish grey. California. 
S. submarina Grt. (13 k) is a very characteristic species, ochreous-white, densely strewn with brown, sulmarir.a. 
with dentate single black transverse lines and a brownish discal shade. No maculae except a small dark luna 
in the place of the reniform macula. Hindwing quite light brownish with a darker marginal area, a central 
dot and traces of a transverse line behind it. Montana, Oregon, Arizona. 
S. mendosica Hmps. (13 k), the only representative of the genus in Argentina, has brownish flesh- mendosica. 
coloured forewings densely strewn with blackish, with single dark transverse lines, the posterior line strongly 
dentate; the maculae and a median shade are only traceable; the undulate line is represented by light dots 
with small dark sagittae before them. Hindwing brownish, towards the margin darker. Described according 
to a $ from Aconcagua. 
*) The species is to he eliminated; it is the palearctic serena Schiff. (Vol. Ill, t. 17 f.) which was sold as an American 
species by an unscrupulous dealer, but which does not occur in America. 
