SYNOPSIS OF CANADIAN ARCTIADAE. 363 
Var. d. Same as c, with an additional black spot on underside of 
primaries near base. 
Var. e. Primaries with two black dots, secondaries with same number. 
Var. f. Primaries with two black dots, secondaries with four black 
dots, primaries below with a dot at base. 
Var. g. Primaries with three black dots, secondaries the same. 
Var. h. Same as g, with the black basal dot on primaries below. 
Var. i. Primaries wholly white, secondaries with three black dots: 
Hab.—London, very common; Cobourg (Mr. Bethune); St. Cather- 
ines (Mr. Beadle); Hamilton (Mr. Reynolds) ; Toronto (Prof. Croft, 
Dr. Morris); Kingston (Mr. Rogers) ; Montreal (Mr. D’ Urban.) 
S. acrea !—Drury. 
Female. Palpi black above, yellowish beneath. Antenne black. 
Head and thorax white and woolly. 
Primaries white, with many black dots, those along the costa largest. 
Secondaries white, with from three to six black spots chiefly along 
the hind margin. 
Wings below white, with fewer spots, veins tinged with yellowish. 
Abdomen deep ochre-yellow above; apex and under surface white, 
with six rows of black spots, the dorsal row largest. Thighs and 
fore tibiz ochre-yellow. Tarsi black, annulated with white. 
In the Male the primaries are white, with a yellowish tinge ; 
secondaries deep ochre-yellow; under surface of body and wings 
ochre-yellow. 
Length of body 6-8 lines. Wings expand 18-23 lines. 
«Larva white when young, nearly black when full grown; inter- 
mediate stage reddish brown; two yellow lines along the sides, and 
a transverse series of orange spots on each segment. From the 
back of each segment arises a tuft of blackish hairs.’’ Feeds on 
almost every herbaceous plant. 
Hab.—London, common; Cobourg (Mr. Bethune) ; Toronto (Dr. 
.Morris, Prof. Croft); St. Catherines (Mr. Beadle); Hamilton (Mr. 
Reynolds) ; Kingston (Mr. Rogers); Montreal (Mr. D’ Urban.) 
S. collaris !—Fitch. 
Palpi brownish-black above, yellow below. Antenne rinttiel above, 
with brown pectinations. Head yellow. Thorax yellow in front, nearly 
white behind. 
