acqucilis. 
curvicollis. 
ciliata. 
intruda. 
obscurata. 
semicollaris. 
chandleri. 
Colorado. 
mackiei. 
sagittata. 
extranea. 
utahensis. 
tetrops. 
1 SI ONCOCNEMIS. By Dr. M. Draudt. 
with the reniform macula; there is also a long, pointed coniform macula, connected with a black basal ray; 
black veins in the marginal area are interrupted by white dots of the undulate line. Hindwing whitish, at the 
margin brownish. From Colorado, California. -— The form aequalis Grt. from Arizona is of more contrasting 
colours, the maculae are more distinctly surrounded by white. -— curvicollis Grt. differs in a shorter ring-macula 
which is not confluent with the reniform macula. The two latter forms may not belong to one species with 
major , but in any case they are very closely allied to it. 
0. ciliata Sm. (26 h). Forewing greyish-white, strewn with blackish-brown, the darkest at the costal 
edge of the central area, with dark veins, without transverse lines; a black basal ray on both sides bordered 
with white is confluent with the long coniform macula; the upper maculae are in whitish rings, the oblong ring- 
macula is pointed towards the base; in the marginal area grey with black internerval streaks, the undulate 
line only marked as a short shadow at the costal margin and anal angle. Hindwing greyish-brown, towards 
the base lighter. Colorado. 
0. intruda Sm. has the habitus of ciliata (26 li); the colour of the forewing is more bluish-grey, the 
transverse lines are only marked at the costal margin, the coniform macula is absent, the ring-macula is a black 
sagittary spot, the reniform macula a small black luna in a yellowish ground; the undnlate line is only present 
at the costal margin and anal angle; in the marginal area between the black veins black intermediate streaks. 
Hindwing whitish with smoky veins and margin. Expanse of wings: 25 to 28 mm. New Mexico. 
0. obscurata B. <£• McD. (26 k). Dark brownish-grey with quite extinct markings, the transverse 
lines only marked by black costal-marginal spots, in the subterminal area strewn with whitish; the ring-macula 
being surrounded by whitish is connected by a white streak with the similar reniform macula, also the coniform 
macula is encircled with whitish; in the marginal area there are black internerval streaks, the undulate line 
is absent. Hindwing diaphanous white with a narrow dark marginal band and a small central spot. Arizona 
(White Mountains). 
0. semicollaris Sm. in its exterior resembles griseicollis (26 k), the connected transverse lines are 
as in jigurata (26 h). Forewing uniformly ashy-grey with very fine, rather indistinct markings; maculae and 
undulate line entirely absent; from the cell-end a black streak extends to the margin which also shows other 
black internerval streaks. The whitish hindwing is smoked at the margin. Head beneath with a brown, black- 
edged band, half of the collar being of a deep blackish brown. Expanse of wings: 31 mm. British Columbia. 
0. chandleri Grt. (= poliochroa Hmps.) (26 i). Forewing light ochre-yellowish grey, strewn with 
black, and incomplete transverse lines of that colour arising from thick costal-marginal spots, the posterior 
line being finely crenulate; the upper maculae are confluent, the coniform macula is connected with a black 
basal raj-; between the black veins of the marginal area there are small white and black sagittae of the undulate 
line. Hindwing yellowish-white with dark veins and a broad blackish-brown marginal band. Canada to California. 
0. Colorado Sm. (— chandleri limps.) (26 i) is irrorated with brown in the greyish-white ground, 
only the posterior transverse line is somewhat more distinct, both being marked by black costal marginal spots, 
the long coniform macula which is parted by black and connected with the black basal ray extends to the 
posterior transverse line; the upper maculae are confluent. Undulate line and veins of the marginal area as 
in chandleri , also the hindwing except the marginal band which is not so dark. Colorado. 
0. mackiei B. <f- Benj. is very closely allied to Colorado (26 i), softer and smoother, not so much 
irrorated, without the black shading round the coniform macula, the upper maculae not filled up with black 
streaks. Hindwing somewhat darker. Expanse of wings: 31 to 34 mm. Canada (Alberta). 
0. sagittata B. <£■ McD. (26 k). Forewing grey, in the basal area blackish, with rather indistinct 
transverse lines which are edged with white on the averted sides; the small oval ring-macula is in a light grey 
ring, the reniform macula is inside bordered with black and white, a little irrorated with orange, between both 
the cell is darkened by black; in the black subterminal area there is the grey, distally sharply white dentated 
undulate line with a W as far as the margin. Hindwing yellowish-white with a black marginal band. Arizona. 
0. extranea Sm. (26 k). Forewing light greyish-brown without transverse lines, only the posterior 
line being occasionally slightly marked, a black basal ray is occasionally united with the long coniform macula, 
the upper maculae being confluent with a thick black central streak in both; in the marginal area black inter- 
nerval streaks which are above between the radial veins bordered with white. Hindwing light brown with a 
darker margin and veins. Colorado. 
0. utahensis B. & Benj. (= extranea B. <£■ McD.) (26 k) is very closely allied to extranea, somewhat 
smaller, lighter, without brownish tints, the undulate line is often marked by white dots. The genitals are 
different. Described from Utah. 
0. tetrops Dijar (26 k) is likewise similar to the preceding, darker brown, the upper maculae are 
represented by black spots connected by a streak, the posterior transverse line is marked by black vein-dots; 
the black basal ray is confluent with the linear coniform macula ; marginal area darkened with black veins and 
streaks between them, the fringes are speckled. Hindwing whitish, veins and margin brownish. Arizona. 
