•OF NORTH AMERICA. 219 



iar stripe, also with a lateral and subventrai macular stripe on each 

 side. Thorax beneath hairy, mottled black and yellow. Legs striped 

 black and yellowish. 



Anterior wings velvety black, marked with clear ochre yellow, but 

 ivithout transverse battels. Costal and inner margin and eritire fringes 

 yellow. All veins except discal clothed with yellow scales, the scales 

 on the subcostal and median covering more than the veins. A broad 

 yellow longitudinal stripe below the median vein, furcate at the outer 

 margin. From the origin of the median nervules a similar stripe con- 

 nects with the upper fork of the longitudinal stripe at the outer mar- 

 gin ; from the same point a similar stripe runs along ist median nerv- 

 ule nearly to the outer margin, and is then refiexed squarely to the 

 costa. 



Secondaries deep ochre yellow, fringes paler. The costal and inner 

 margins are largely and irregularly dusky black. The apical spot of 

 the submarginal row is fused with the costal cloud, and the anal spot 

 with the black inner margin, leaving the large cordate middle spot 

 alone isolated in the yellow of the wing. Between this and the anal 

 angle there is a small triangular marginal spot, and a larger one near 

 the apex partially fused with the apical cloud. 



Beneath the markings are reproduced but the colors are all paler, 

 and the black on the secondaries is broken up at the base and along 

 the costa into numerous spots. 



Expanse of wings, 1.50 inches ; length of body, 0.65 inch. 

 Habitat. — Atlantic States and Canada. 



Although this species is one of the most strongly marked of the 

 North American arctians, having more distinctive points than almost 

 any other, there has been much confusion in its synonymy. It is the 

 only American species except A. speciosa in which the veins are clothed 

 with pale scales while the ground color of the primaries is black, which is 

 destitute of transverse bands. A. speciosa, Moeschler, judging from 

 the figure, is very closely allied to A. virguncula, Kirby, having an 

 ornamentation of the primaries almost identical, but differing on the 

 secondaries, being at the same time a smaller and slenderer insect. 

 May it not be only a dwarfed variety ? Both these insects have yellow 

 secondaries as have also A. persephone, Grote, and some varieties of 

 A. achaia, Boisduval, but both these latter species have transverse bands 

 on the primaries which separates them instantly. 



Grote states that the specimen in the British Museum determined as 



