Notodontidae 
The habits and the distribution of this species are very much 
the same as those of the preceding. 
(3) Datana perspicua Grote & Robinson, Plate XL, Fig. 
I4> 3. 
More nearly allied to D. ministra than to any other species of 
the genus, but readily distinguished from that insect by the paler 
color of the secondaries and the lighter, more yellowish color of 
the primaries. 
(4) Datana integerrima Grote & Robinson, Plate XL, Fig. 
1 3 - 
The darker color of the primaries and the more numerous 
transverse bands enable this species to be at once separated from 
the other species which we have Figured. 
Genus HYPERAESCHRA Butler 
(1) Hyperaeschra stragula Grote, Plate XL, Fig. !, $. 
Syn. scitipennis Walker. 
The moth is found throughout the United States. With the 
help of the illustration we have given there should be no difficulty 
whatever in determining it. 
(2) Hyperaeschra georgica Herrich-Schaeffer, Plate XL, Fig. 
7 > 3 . 
The moth is found in the Appalachian subregion, and is com¬ 
moner in the southern portions of its range than in the more northern 
portions thereof. It is, however, not very rare in Pennsylvania. 
(3) Hyperaeschra tortuosa Tepper, Plate XL, Fig. 4, $. 
The insect is as yet quite rare in collections. Its habitat is 
Colorado and Arizona. 
Genus ODONTOSIA Hubner 
(1) Odontosia elegans Strecker, Plate XL, Fig. 3, $ . 
This elegant insect is found from Canada to Colorado and 
appears to be commoner in the region of the Rocky Mountains 
than elsewhere. 
Genus NOTODONTA Ochsenheimer 
The genus is represented in both hemispheres. There are two 
species which belong to our fauna. We give illustrations of both 
of them. 
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