Notodontidae 
(2) Apatelodes angelica Grote, Plate XL, Fig. 21, 6 . 
Syn. hyalinopuncta Packard. 
The distribution of this species is the same as that of the 
preceding. It is rather common in western Pennsylvania. 
Genus MELALOPHA Hubner 
Six species and a number of subspecies have been recognized 
as belonging to this genus and are found in the region with which 
this book deals. Of four of these we give figures. 
(1) Melalopha apicalis Walker, Plate XL, Fig. 18, $ . 
Syn. vau Fitch; indentata Packard. 
The figure upon our plate, cited above, represents the form 
of the species to which Grote & Robinson applied the name 
ornata and of which the name incarcerata Boisduval is a syno¬ 
nym. The insect is widely distributed all over the United States. 
(2) Melalopha inclusa Hiibner, Plate XL, Fig. 19, ? . 
Syn. americana Harris. 
The insect is very widely distributed over the Appalachian sub- 
region. The larva feeds upon the leaves of various species of 
the genus Populus. 
(3) Melalopha strigosa Grote, Plate XL, Fig. 17, $ . 
The habitat of this species is the northern portion of the Appa¬ 
lachian subregion. 
(4) Melalopha albosigma Fitch, Plate XL, Fig. 16, $ . ' 
Widely distributed over the United States. Easily discrimi¬ 
nated from the other species by the broad brown shade on the 
apical half of the outer margin of the primaries, succeeded near 
the costa by a distinct s-shaped white line. 
Genus DATANA Walker 
Thirteen species which are properly referred to this genus are 
found within our limits. Of these we give figures of the four 
which are most commonly found. 
(1) Datana ministra Drury, Plate 1 , Fig. 13, larva; Plate XL, 
Fig. u, 6. 
This is a very common species, found throughout the Appa¬ 
lachian subregion. The larvae are gregarious and may be found 
in great masses upon the leaves of the walnut and allied trees in 
the latter part of August and early September. 
(2) Datana angusi Grote & Robinson, Plate XL, Fig. 12, 
29 3 
