56 
TOETEICID^. 
oblique^ scarcely concave — whitish fawn-colour^ longitudinally streaked with darker shades ; 
from the base are two brownish shades^ one above and one below the middle; the latter the 
most conspicuous^ blending with some streaks of the same colour, which are continued along 
the cell, terminating in a brownish- fuscous spot at its lower extremity : from the apical 
margin pointing iuAvards are six narrow brown wedge-shaped dashes following the veins to 
the end of the cell, interrupted by two pale elongated spots, one before the apex, the other 
below the middle : the anal angle shaded with brown : cilia irrorated with brownish fuscous, 
with a slender whitish line along their base. Hiud wings brownish, with paler cilia. Type (J . 
Expanse ot wings 24 millims. 
From the Eastern States of North America. 
Semasia? elongana. (Plate LXXIII. fig. 2.) 
Palpi stone-grey, very long, projecting more tliau three times the length of the head 
beyond it ; the second joint thickened in the middle, clothed with long hair -like scales, 
enveloping and concealing the short slender apical joint : antennae stone-grey, pubescent in 
the male. Fore wings— about three times as long as wide, with the costa straight, slightly 
depressed towards the apex ; apex produced ; apical margin very oblique, not indented — 
whitish stone-grey, mixed with dull oclireous and fuscous scales : on the dorsal half of the 
basal portion of the wing is an inconspicuous oblique ochreous shade mixed with fuscous ; 
from the middle of the costa is a very faint indication of an abbreviated oblique fascia ; 
towards the ajiex are some inconspicuous whitish costal streaks, blending towards the sub- 
lustrous white outer margin of the ocellated spot, which contains two black streaks : the 
apical margin is tinged with ochreous ; the cilia irregularly tinged wdth purplish fuscous, a 
slender pale line along their base. Hiud wings ample, pale brownish grey : cilia as on the 
fore wings ; vein 4 absent. 2 J" • Expanse of wings 25 millims. 
Northern Oregon, middle of April 1872. 
This is one of several species in which vein 4 of the hind wings appears to be obsolete. 
They agree in neuration with piqnllana, Linn., and wimmerana, Tr., placed in the genus 
Semasia by Heinemann, but scarcely with the distinguishing characters of the neuration of 
the genus as stated by that author in his synopsis (Schmett. p. 100), viz. " Ast 3. und 4. 
der Hinterfliigel auf gemeinschaftlichem Stiele;^^ and again, in the same volume (Tabelle 
der Gattungen, p. 2), " Der ]Mittelast der Hinterfliigel gegen seinen Ursprung deutlich 
gebogen und convergirt daselbst mit Ast 4." In the length of the palpi and in the form of 
the fore wings it is also somewhat peculiar. I have placed it with some hesitation in this 
genus, at least provisionally. 
Semasia artemisiana. (Plate LXXIII. fig. 3.) 
Head white, tufted in front, with a slight ochreous tinge above, the palpi projecting more 
