Lithosiidae 
as well as by the difference in the color of the wings, is a com¬ 
mon species in the Atlantic States, and ranges westward into 
the basin of the Mississippi. 
Genus H/EMATOMIS Hampson 
This little genus includes, so far as is now known, but two 
species, both of which are Mexican, but one of which ranges 
into southern Arizona. The species are separated as follows by 
Hampson : 
i. Fore wing with yellowish streaks, on costa, through cell, and 
on inner margin. mexicana 
2. Fore wing with pale streak on the costa only. uniformis 
(i) Haematomis mexicana Druce, Plate XIII, Fig. 34, 5 . 
(The Mexican Lichen- 
moth.) 
With the help of the illus¬ 
trations we have given the 
student should have no great 
difficulty in identifying this Fig. 51. — Hamatomismexicana, $. f. 
little moth. (After Hampso "' ) 
Genus COMACLA Walker 
This genus is represented in our fauna by two species. One 
other occurs in Europe and northern Asia, and another in 
tropical Africa. The two American species are very much 
alike in appearance, and it is difficult to distinguish worn 
or rubbed specimens. The following key will be of some 
assistance: 
Wings pale mouse gray, translucent; collar and abdomen 
ochreous; apex of fore wings rounded............. simplex Wallcer 
2. Wings and body uniformly 
pale mouse gray, wings trans¬ 
lucent only about the mid¬ 
dle, sprinkled with blackish 
scales and marked by an 
obscure discal dot, apex of 
fore wings less rounded and 
more nearly square than in 
preceding species. fuscipes Grote 
(1) Comacla simplex Walker, Plate XIII, Fig. 34, $ . (The 
Mouse-colored Lichen-moth.) 
Syn. murina Walker; clarus Grote & Robinson; texana French, 
Fig. 52. —Comacla simplex, & . -f. 
(After Hampson.) 
107 
