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. 



14. & 



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. 

 i}, <$. 



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 HYPER^SCHRA Butler 



(1) Hyperaeschra stragula Grote, Plate XL, Fig. i, 3. 



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) Hyperseschra tortuosa Tepper, Plate XL, Fig. 4, ? . 

 The insect is as yet quite rare in collections. Its habitat is 



Colorado and Arizona. . 



Genus ODONTOSIA Hu'bner 



(i) Odontosia elegans Strecker, Plate XL, Fig. 3, 8. 



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. 



394 



