LEPIDOPTERA. 
327 
specialized forms, as Cosmosoma (Fig. 400), the hind wings 
are greatly reduced in size, and the branches of radius and 
cubitus coalesce to a remarkable 
degree. 
To the first division of this 
family belong a small number 
of bluish-black or brown moths 
which have more or less vermilion 
or yellow on the head, prothorax, F,G ' <°° ,-cos,„os<»» a aug*. 
and patagia. These moths are of medium size, expanding 
from one and one fifth to two inches. The dull color of the 
wings is usually relieved by the bright color of the head and 
patagia, and by a layer of blue scales covering the thorax 
and abdomen ; but in some species these are wanting. The 
larvae feed on grasses. Some of them strongly resemble 
those of the Arctiidae in appearance as well as in habits, 
being thickly clothed with hair; they also spin cocoons simi¬ 
lar to those of Arctiids. Our common forms represent two 
Fig. 401 .—Ctenucha virginica. Fig. 402 —Scepsis fulvicollis. 
genera, Ctenucha (Cte-nu'cha) and Scepsis (Scep'sis)/ In the 
East we have only a single species of each of these genera, 
Ctenucha virginica (C. vir-gin'i-ca), which is represented by 
Figure 401, and Scepsis fulvicollis (S. ful-vi-col'lis), repre¬ 
sented by Figure 402. 
The second division of the family 
includes a much larger number and a 
much greater variety of forms. Our 
Fig. 403 —Lycomorph a 
Phoius. most common species is Lycomorpha 
pholus (Ly-co-mor'pha pho'lus). This is black with the 
basal half of the fore wings and the basal third of the hind 
