448 NOCTUID-. 
antemedial area suffused with fuscous, the area before the post- 
medial line suffused with white, broadly to median nervure, then 
narrowly, the costal area suffused with fuscous towards apex, the 
apical half of terminal area slightly suffused with white ; subbasal 
line indistinct, curved, from costa to submedian fold; antemedial 
line double, oblique and minutely waved from costa to submedian 
fold, then ineurved; claviform and orbicular absent; reniform 
small, elliptical, white defined by brown and with black spot in 
centre; a diffused oblique medial line, stronger at costa; post- 
medial line sharply angled outwards below ‘costa, oblique from 
vein 4 to submedian fold, then excurved, with a diffused maculate 
dark line beyond it ; subterminal line formed by a series of diffused 
rather dentate dark marks, oblique towards costa, excurved at 
middle and incurved in submedian fold ; a terminal series of slight 
brown lunules; cilia with slight pale lines at base and middle. 
Hind wing ochreous whitish suffused with brown, a brown terminal 
line; cilia! ochreous whitish; the underside white, the costal and 
terininal areas irrorated with brown, a brown discoidal lunule, 
indistinct diffused postmedial line and subterminal series of spots, 
Hab, Canwava, Ontario; U.S.A., New Hampshire. Eup. 36 
millim. Figured from a drawing from specimen in U.S. Nat. Mus. 
Genus GYRTOTHRIPA, nov. 
Type, G. pusilla. 
Proboscis fully developed ; palpi with the 2nd joint porrect, extending about 
the length of head and broadly fringed with scales above, the 3rd obliquely 
upturned, short ; frons smooth, with large tuft of hair; eyes large, round; 
antenne of male minutely ciliated ; thorax clothed entirely with scales and 
without crests; tibiz moderately fringed with hair ; pectus of male with lateral 
fringe of very large scales; abdomen with dorsal er eats on two basal segments. 
Fore wing with the apex rectangular, the termen evenly curved and not erenu- 
late; vein 3 from well before angle of cell; 5 from just above angle; 6 from 
upper angle; 9 and 10 anastomosing with T, 8 to form a minute areole; 11 
from cell. Hind wing with veins 3, 4strongly stalked ; 5 fully developed from 
angle of cell; 6, 7 from upper angle ; 8 anastomosing with the cell to near 
middle. 
A. Hind wing with the interspaces SOMMNy allie yeeeeseee ase pusilla. 
B. Hind wing with the interspaces not semihyaline ............ microdonta. 
6798. Gyrtothripa pusilla. 
Gyrtona pusilla, Moore, Lep. Atk. p. 289 (1888); Hmpsn. Moths Ind. ii. 
p. 409. 
Head and thorax grey tinged with olive-brown; palpi redder 
brown; pectus white; fore and hind legs suffused with dark 
brown, the tarsi blackish ringed with white: abdomen grey tinged 
