182 
ONCOCNEMIS. By Dr. M. Draudt. 
flag rant is. 
primula. 
singulars. 
augustus. 
niia. 
glennyi. 
riparia. 
lacticollis. 
cibalis. 
canadicola. 
aslrigata. 
melalutea. 
extremis . 
chorda. 
finely encircled with black, the ring-macula elliptical, the reniforni macula below dark-centred; marginal area 
back-veined, between them with black sagittae before and behind the whitish undulate line. Hindwing light 
brownish with a dark border. Arizona. 
0. flagrantis Sm. (26 f) is a very small species exhibiting the greyish-white ground irrorated with 
brown, only the marginal area remaining lighter; the transverse lines are rather indistinct, the anterior line 
double; maculae whitish, the reniform macula large, almost quadrangular; the undulate line is only marked 
by the contrast with the lighter marginal area. Hindwing light brown with a dark anal-angrdar spot. California, 
Arizona. 
0. primula B. <L• McD. (26 f) is closely allied with flagrantis , larger, more brightly coloured and with 
white hindwings in both sexes. Forewing flesh-coloured, in the central area irrorated with black, with distinctly 
prominent maculae; the posterior transverse line is double, subterminally with single black spots. The hindwing 
shows a small black double spot at the anal angle. Described from California. 
0. singularis B. <£■ McD. (26 f) is another small, remarkably narrow-winged species very similar to 
flagrantis. Forewing ochre-yellowish, densely irrorated with blackish-brown, only the basal area remaining 
lighter yellowish with rather indistinct markings, the maculae of the ground-colour in the slightly blackened 
central area; of the undulate line there exists merely a minute light spot at the anal angle. Hindwing whitish 
with a dark marginal band. Arizona. 
0. augustus Harv. (26 f) is much larger, the forewing light red-brown, strewn with black, in the central 
and marginal areas irrorated with a brownish grey, with single transverse lines, the posterior of which is dentate; 
the maculae are light reddish-brown, in light yellow rings and finely encircled with black, there is also a large 
coniform macula, a faded median line expands in the cell into a black spot; the undulate line consists of white 
jags proximally bordered with black sagittae. Hindwing white with a faded brown subterminal band. Texas, 
California, Arizona. 
0. nita Sm. is very similar to augustus (26 f), smaller on an average, more loam-coloured yellowish- 
grey, rarely with a slight reddish tinge, the veins finely bordered with white, the central and subterminal shadows 
distinct, the fringes at the ends of the veins crossed by white. Expanse of wings: 27 to 36 mm. California. 
0. glennyi Grt. (26 g) is one of the largest species with light red-brown forewings irrorated with a 
blackish brown, single crenulate transverse lines and large maculae encircled with black inclusive of the coniform 
macula; the undulate line consists of small grey sagittae, proximally before them with black ones. Hindwing 
brownish with darker veins and margin. Colorado. 
0. riparia Morr. (26 g) is much lighter than glennyi with almost entirely extinguished transverse 
stripes, much smaller maculae, an oblong ring-macula, much fainter sagittae of the undulate line. Hindwing 
light yellowish-brown, in the margin darker. Massachusetts, New York, Buffalo. 
0. lacticollis Sm. (26 f) is a smaller species easily discernible by the yellowish-white head and collar 
with a jet-black line between the antennae. Forewing dusty ash-grey without distinct transverse lines and 
maculae, with fine black veins, and in the marginal area with internerval streaks. Hindwing yellowish-grey, 
in the distal half smoke-brown. Utah. 
0. cibalis Grt. (26 g) resembles riparia, the whitish forewing is strewn with black, with black veins, 
the transverse lines only marked at their beginnings at the costal margin, without the ring-macula, the reniform 
macula only marked by a minute dark spot in the lower cell-angle, with a long, pointed conifoim macula; 
undulate line similar to that of riparia , though more prominent and obliquely running to the apex. Hindwing 
white with brown veins and margin. Colorado. -— f. canadicola Strd. (= snbsp. 1 Hrnps.) is doubtfully placed 
here, being smaller, of a more monotonous grey colouring, the marginal area not lighter whitish, with more 
distinct black sagittae before the undulate line and a distinct quill on the collar. Canada. 
0. astrigata B. &• McD. (26 g). Frons, head, and base of collar deep blackish-brown; forewing grey, 
in the marginal area irrorated with brown, all the transverse stripes and maculae being absent, with fine black 
veins in the marginal area, with blackish-brown fringes. Hindwing diaphanous light grey, the veins, costal 
margin and distal margin irrorated with brown. Utah. 
0. melalutea Sm. (26 g) has yellowish forewings irrorated with black and grey particularly in the 
basal and marginal areas, with double dentate transverse lines and a row of white vein-dots behind the distal 
line, the somewhat lighter maculae are finely encircled with a dark colour; the undulate line consists of an 
irregular row of white dots. Hindwings lustrous yellowish-white with a blackish marginal band. Colorado. 
0. extremis Sm. is light grey, in the marginal area lustrous brownish-black, with intense, single, 
black transverse lines and a broad faded median shadow, without any macular marking and undulate line. 
Hindwing yellowish white with a broad black marginal band. Expanse of wings: 33 mm. From Canada (British 
Columbia). 
0. chorda Grt. (— refecta Sm.) (26 g) is similar, more reddish-brown, in the distal half of the central 
area whitish with intense black single transverse lines, the median shadow only marked at the costal margin, 
and with a whitish shading of the undulate line; no maculae except traces of the coniform macula. Hindwing 
white with blackish veins and a blackish-brown marginal band. Colorado, California. 
