34 
TOKTEICID^. 
streaked and dotted witli greyish fuscous ; the basal patch greyish fuscous^ its outer edge 
angulated about the middle and indented below it ; a greyish-fuscous central fascia widest 
towards the dorsal margin, narrower towards the costa, containing some tawny scales, some- 
times wholly, sometimes partially interruj)ted along the cell ; the apical portion of the wing 
delicately streaked along the costa with greyish fuscous ; a spot at the apex and an interrupted 
streak of the same colour extending obliquely upwards from the apical margin above the anal 
angle, with a slender grejdsh-fuscous line along the base of the cilia, which are white with a 
few fuscous spots. Hind wings pale greyish fuscous. 2 J . Expanse of wings 16 millims. 
Southern Oregon, June 2nd, 1872. 
This insect differs from its nearest allies Sericoris bipartitana, Clem. (= similisana, Walk.), 
and Sericoris dealbana, Walk., in the white gTound-colour of the fore wings being delicately 
streaked, as well as in the apical half of the costal margin being streaked rather than spotted : 
moreover it has a generally greyer tinge than those two species, the darker markings of which 
are blackish. 
Sericoris dealbana. (Plate LXVIII. fig. 3.) 
Penthiua dealbana, Wall-. Cat. Lep. Ilct. xsviii. p. 37-1. 
Palpi brown, tipped with whitish, with the second joint roughly clothed below ; the apical ' 
joint exposed, scarcely projecting beyond the head, which with the antennae is also brown. 
Fore wings — with the costa slightly arched ; apex rounded; apical margin oblique — white, 
with an outwardly angulated basal patch ; a slightly oblique central fascia indented about the 
middle of its inner edge and dilated outwardly on the dorsal margin, beyond it three costal 
spots and one larger apical spot or shade running thx'ough the cilia, also an oblique elongated 
patch from the apical margin above the anal angle to a point below the middle costal spot, 
all these markings pale olive-brown irrorated with darker brown scales ; some minute ab- 
breviated brownish streaks between the costal spots and patches, especially towards the apex : 
the pale ground-colour of the wing is not striated j and the costal spots are wider and more 
conspicuous than any to be found in Sericoris dilutifuscana. Hind wings pale cinereous, with 
whitish-grey cilia, slightly shaded round the apex. Type ^ . Expanse of wings 18 millims. 
North America. From Mr. Carter^s collection. 
This species stands in the collection of the Entomological Society of Philadelphia under 
the MS. name of Antithesia hebascana, Clem. 
Sericoris chalybeana. (Plate LXVIII. fig. 4.) 
Head saffron mixed with fuscous : palpi stout, compressed, projecting scarcely the length 
of the head beyond it; the apical joint exposed, whitish grey; the apex fuscous : antennae 
fuscous. Fore wings bright saffron (twice as long as wide, the costa regularly arched, apical 
margin rather straight, not indented), blotched with blackish fuscous, most noticeable in two 
