168 
NYMPHALIDM. 
the angular projection of the wing, where it is obscured by a large 
light blue blotch. The pattern of the under side, resulting from a 
combination of the white lines of the nervures and the delicately 
defined markings, is exceedingly intricate, and has earned for the 
species its common French name of “ Carte geographique.” A 
description is very difficult, as also is its representation in a figure. 
Mr. Horace Knight has done his best to represent it in the 
present work, and I think I may say has succeeded pretty well. 
PI. XXXVIII., 4. 
Times of Appeakance. — April and May. 
In this species we have a very well-marked example of sea- 
sonal dimorphism ; the typical form Levana, L., described above, is 
only found as the first brood, but the second brood differs con- 
siderably, and will be thus described : — 
Var. a. Frorsa, Linn. Syst. Nat. x. 480 ; Esp. 15-3, 59, 4 ; 
Hub. 94-6 ; Fit. B. 55. — About the same size and the same shape 
as Levana, hut all the wings are brownish black. Fore wings with 
a white central band interrupted much in the same way as that of 
lAinenitis Syhilla. External to this is a row of small white spots 
beginning near the apex ; near the anal angle is a red line, which 
is continued along the margin of the hind wings. Hind wings 
with a well-defined white band across their centre, and besides the 
red line mentioned above, two others, one on either side of it, less 
distinct. Marginal fringes black and white. Under side as in 
Levana, hut the ground colour is darker and the yellow spots are 
replaced by white ones ; the central white band is distinct, and the 
light blue blotches are absent. PI. XXXIX., 2. 
Time of Appearance. — July to September. 
Var. b. Forima, 0. I. 1, 134. — An intermediate form, which 
has the black ground colour of I’rorsa, but with the white markings 
and bauds yellow and much narrower. It is supposed by some 
entomologists (Geyer amongst others) to be a form of the 
second brood modified by cold weather during its earlier stages. 
PI. XXXIX., 1. 
Times of Appearance.— June and September. 
