Descriptions of Pterophoride and Orneodide. 501 
along costa above base of cleft, and two shorter blackish costal marks 
posteriorly : cilia white, on costa dark fuscous on markings, and on 
an apical patch except at tips, on lower margin of first segment 
wholly dark fuscous except a white bar on vein 7, on upper margin 
of second segment fuscous, round its apex dark fuscous except at 
tips, on dorsum and termen with three undefined patches of pale 
fuscous suffusion. Hind-wings cleft firstly from 2, secondly from }, 
segments moderate, long-pointed ; rather dark fuscous ; cilia fuscous, 
with an ochreous gloss. 
CoLorabDo, U.S., 5,000-7,000 feet; three specimens. 
Very similar superficially to inquinatus, but larger, with 
the first segment of fore-wings much narrower in pro- 
portion to second, the white iroration chiefly on costal 
half (in inguinatus distributed evenly throughout), no 
apparent dark spot in disc anteriorly, and two distinct 
similar dark marks on costa posteriorly, whereas in 
inquinatus there is only one conspicuous posterior mark 
and sometimes a minute additional dot. 
Pterophorus chionastes, 1. sp. 
g¢ 2.2427 mm. Head, palpi, antenne, thorax, abdomen, and 
legs white; thorax sometimes with a broad whitish-ochreous central 
stripe ; abdomen sometimes mostly suffused with whitish-ochreous, 
Fore-wings cleft from 3, first segment moderate, long-pointed, second 
obviously broader, shorter-pointed ; pale fuscous, mostly suffused 
with white, less strongly towards costa, with some scattered dark 
fuscous scales; a small cloudy dark fuscous spot in dise at }; an 
oblique dark fuscous mark before cleft, preceded by some fuscous 
suffusion, a dark fuscous mark along costa above base of cleft, and 
sometimes a small dark fuscous mark between these; a short 
undefined dark fuscous mark beneath cleft ; a suffused dark fuscous 
mark along costa at §; sometimes traces of dark fuscous dots at 
extremities of veins 2-4, 7, and 8: cilia white, within cleft and on 
dorsum more or less suffused with brownish. Hind-wings cleft 
firstly from 2, secondly from 4, segments rather narrow, second long- 
pointed ; grey, third segment paler ; cilia grey or pale grey, with a 
brassy tinge. 
CoLorADOo, U.S., 5,000-—7,000 feet; four specimens, 
Pterophorus glochinias, n. sp. 
6 9. 26-28 mm. Head ochreous-whitish, more or less irrorated 
with fuscous or dark fuscous except on anterior half of crown. 
