209 
ASTHENIA PODALIRIARIA, Westwood. 
PLATE XXIX. Fig. 1. 
In supplying us with a figure of this new species^ 
Mr. Westwood has suggested the propriety of refer- 
ring it, along with se-veral others, to a new genus, 
which he names Asthenia. The species approach 
our EngUsh Ourapteryx samhucaria in general form 
and in the hind wings heing tailed. From that 
genus, however, they differ in having the antenna 
short and strongly bipectinated, and the legs as well 
as the body very short and weak. The fore wings 
are triangular, not falcate at the tip, the external 
margin forming nearly a straight line. The veins 
of the fore wings are arranged as in Ourapteryx, 
except that the branches both of the postcostal and 
medial veins arise much closer to the base of the 
wings. The hind wings are much more decidedly 
tailed than in 0. samhucaria ; the postcostal vein 
emits three branches, independently of the medias- 
tinal vein, whereas in 0. samhucaria the postcostal 
sends off only two branches. 
The general colour of A. podalirtaria is very pale 
cream-colour, the fore vdngs having three transverse 
narrow brown bars across them, the first before the 
middle, the second behind the middle (interrupted 
