60 
PIERWM. 
general rule of this genus, which is to select plants of the order 
Lcguminosa'. 
Times of Appeaeance. — March and October. 
VARIETY. 
a. ? . Alba, Staiidinger, Catal. p. 6. This is the white form of 
the female, and corresponds to the var. Helice of C. Edusa, from 
which it differs in the lighter colour of the hind wings, the 
narrowness of the black borders, and the arrangement of the spots 
on the fore wing ; it is also smaller than var. Helice. From 
C. Erate var. Pallida it is more difficult to distinguish it ; it differs, 
how'ever, in having the black border of the fore wing much wider 
where it touches the inner margin than it is in the latter. 
PI. XIIL, 5. 
Obs. I. — G. Mijrmidone is very close to C. Edusa, but at the 
same time is perfectly distinct from it. The description I have 
given above is made after examination of a considerable number of 
specimens, and I believe I have not mentioned any characters as 
distinctive that are not constant. The female often greatly 
resembles the female of Clmjsotheme, but the greenish colour of the 
hind wings in the latter, as well as the decided light mark in the 
centre of the discoidal spot on the under side of the fore wings, 
will assist in the distinction. 
Obs. II. — The male of C. Mijrmidone, as before mentioned, is 
provided with an ovate light-coloured patch immediately beneath 
the costal nervure of the hind wings, and close to the base. This 
is generally of a lighter colour than the surrounding portion of the 
wing, but varies, sometimes being even black. The males of other 
species have it in common with the present, such as G. Edusa, 
ylurora, Heldreichi, and Aurorina. Under a low power it will be 
seen to differ from the rest of the wing in having densely packed 
scales, not laid down smoothly and regularly like the ordinary 
wing-scales, but more elevated, and producing a granular appear- 
ance. Under a higher power these scales will be seen to be ovate 
in shape, with the margins entire, and without any notches or 
indentations. At the base is a small foot-stalk, as in the wing- 
scales. Boisdiival called this structure a “glandular saccule.” As 
