494 
EXOTIC MICROLEPIDOPTERA. 
sometimes suffused brownish-oclireous, these sometimes very in- 
distinct or obscure; discal stigmata blackish, more or less obscurely 
edged brown, first rather beyond plical, second and sometimes also 
first with an additional similar spot above and obliquely before it; 
a cloudy dark spot on fold beyond plical stigma; very obscure 
grey-whitish opposite marginal spots at |: cilia whitish-grey, 
sprinkled grey. Hindwings light bluish-grey ; cilia pale greyish. 
Canada, Toronto, Muskoka, May-August ( Parish ) ; 20 ex. 
Might perhaps be mistaken for dark operculella , but without 
hairpencil of hindwings. I believe this to be deter sella Clem. ; as 
it seems to be little known, and published descriptions are very 
imperfect, I redescribe it. Clemens described it as Gelechia deter - 
sella , but as there was at that time a Gelechia detersella of Zeller, 
his name is void, and Busck’s substitution of brackenridgella must be 
accepted. This and the following species have been placed in 
Gnorimoschema, but are correctly referred to Phthorimaea. 
Phthorimaea batanella Busck. 
(5 5 . 12-14 mm. Head, thorax whitish speckled dark grey, 
face grey-whitish. Antennae whitish ringed dark fuscous. Palpi 
whitish, second and terminal joints each with narrower basal and 
broader supramedian dark grey bands. Pore wings elongate, apex 
pointed, termen extremely obliquely rounded; white or grey- 
whitish, irregularly irrorated pale or dark grey ; two oblique series 
of three cloudy spots of blackish-grey irroration each from costa 
near base and at 4 to fold, sometimes partly obsolete, second 
terminated by dark fuscous plical stigma; discal stigmata dark 
fuscous or blackish, first rather beyond plical, second elongate; an 
elongate dark fuscous spot on fold beyond plical; sometimes a more 
or less developed broad irregular longitudinal streak of grey and pale 
ochreous suffusion, passing between stigmata from near base to near 
apex; costa towards § and terminal area sometimes blotched with 
dark grey suffusion, sometimes with faint brownish or pinkish tinge : 
cilia whitish, sprinkled dark grey or blackish. Hindwings light 
bluish-grey ; cilia pale greyish. 
Canada, Toronto, May-August (Parish); 16 ex. Closely allied 
to preceding. 
Phthorimaea ochroschista, n. sp. 
<3 $. 12-15 mm. Head whitish, irrorated grey on crown. 
Palpi grey-whitish, second and terminal joints each with two bands 
of dark fuscous irroration. Antennae light grey ringed dark fuscous. 
Thorax grey, scales tipped whitish. Abdomen grey, 3 basal 
segments light ochreous-yellowish, anal tuft whitish. Yalva 3* 
narrow, ribbon-shaped, horizontally curved, apex rounded. Pore- 
wings rather narrow, apex acute, termen extremely obliquely 
rounded ; grey-whitish irrorated grey, sometimes sprinkled blackish ; 
pale ochreous streaks beneath costa on anterior half, in disc 
throughout cell, along fold to near extremity, and between veins 
towards costa posteriorly more or less developed, sometimes partially 
