191 
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Notodonta (c.yelodasys) unicornis, Lin.—The Unicorn Prominent. 
This species, similar to the preceding, is frequently known in the 
larva state as the Unicorn Apple-tree Caterpillar on account of a 
prominent projection that rises in the shape of a horn from the back 
of the fourth segment. This feeds on dog-wood, plum, alder and win- 
terberry (. Ilex), besides the apple. 
Spec. Char. Moth .—The top of the fourth ring rises in the form of a 
long horn, sloping forwards a little; the tail, with the hindmost feet, 
which are rather longer than the others, is always raised when the 
larva is at rest, but it generally uses these legs in walking. Head 
large, brown; sides of the second and third rings green, rest of the 
body brown, variegated with white on the back. 
Moth .—Expands an inch and a quarter. Color of fore wings light 
brown, variegated, with patches of greenish white and with wavy, 
dark brown lines, a small whitish space near the base, enclosed by 
two of the latter. Two of the greenish white patches are along the 
costa and the posterior margin. Near the middle is a short black 
mark. The hind wings of the male are whitish, with a dusky spot 
on the anal angle; in the females the hind wings are dusky. 
Edema albrifrons, Smith. 
This moth is of a gray color with small brown marks on the fore 
wings, but is chiefly characterized by a white stripe along the costa 
on the outer two-thirds of the wing. The larvae, according to Prof. 
Riley, is “of a bluish white ground color, marked longitudinally with 
yellow bands and fine black lines, with the head and hump on the 
11th segment either uf a light coral or dark flesh color, and which 
generally carries the hinder portion of the body elevated in the air.” 
They feed on oaks and are sometimes quite destructive. 
Telea polyphemus, Linn.—The Polyphemus Moth. 
The group to which this species belongs forms as it were the cen¬ 
tral and most characteristic of the family. The wings are broad, the 
bodies large and the antennse very broadly pectinate. The larvae 
are known as silk worms because the silk of many species is readily 
wound from the cocoons, and forms the source of supply of that arti¬ 
cle. For this reason they are as a group regarded as beneficial rather 
than injurious insects, though some of them occasionally injure forest 
trees and orchards. 
As a silk worm this one has not been found profitable for the rea¬ 
son that the silk cannot be readily reeled off. The larvee feeds upon 
a variety of trees among which the oaks, hickories, elm, basswood, 
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