1863.] 
335 
Ctenucha virginica is found most frequently in Canada, while I have 
taken it in damp woods in the vicinity of Buffalo, N. Y., as well as 
along the Canada shore of the Niagara Biver. If has also been re¬ 
ported to me as having been taken in different parts of the Eastern and 
Middle States. The caterpillar hybernates, forming a slight cocoon 
in May and June, the imago appearing in July and August. 
ABCTIOIDEA H-S. 
ARCTIA Schk. 
Arctia anna nov. sp. Plate 8. Fig. 1. 
Anterior wings deep velvety black striped with pale yellow. Costa 
black with a small pale yellow streak at base; subcostal vein to apical 
third, median vein and its two middle branches and submedian vein 
narrowly striped with pale yellow. A broader pale yellow band tra¬ 
verses the wing longitudinally from base to external margin becoming 
slightly forked at internal angle and upon which, in the terminal half 
of the wing, rests a series of pale yellow stripes in the shape of the 
letter K, with the straight stroke turned towards the base of the wing 
and the upper limb reflexed, at the apex, towards the costa. Fringes 
brownish black; internal margin rather broadly striped with pale yel¬ 
low. Posterior wings brownish black, immaculate ; fringes of a more 
brownish shade. Under surface of wings dark brown and showing, 
on the anterior pair, traces of the broader yellow bands of the upper 
surface. Disk of the thorax and each tegula black bordered with pale 
yellow; collar yellowish with two black spots; base of the thorax show¬ 
ing a few reddish colored hairs ; head between the eyes pale yellow, 
without spot. Upper and under surface of abdomen immaculate and 
with under surface of thorax, legs and antennae, deep brownish black; 
palpi black. 9 . Exp. If inch. 
Hah. Pennsylvania. 
The blackish, immaculate abdomen and posterior wings separate it 
from any species of North American Arctia known to me; in the dis¬ 
position of the stripes on the anterior wings it presents most resemblance 
perhaps to Arctia virgo L. 
For a 9 specimen in fine preservation the Cabinet of this Society is 
indebted to Dr. Samuel Lewis of Philadelphia. 
