INSECT VATIIETY. 83 



COMPLETE COLOUR DIFFERENTIATION {cOriti)ined). 

 Butterflies. Moths. 



T. f Male, fulvous ] Cethosia. 

 " I Female, greenish J Argynnis. 



(.r Male, yellow j Gonopteryx. 



I Female, white J ^ ' 



{ f Male, orange ] Genera of the Geometrina and 



-p. J I Female, yellow J Bombycina. 



"\ f Male, yellow 1 Euthemonia, Eunomos, Angu- 



( I Female, orange J laria. 



In the last instance, D, the inversion is not alone one oi 

 coloui-j but also of size; the females of a British representative, 

 the Clouded Buff Moth, being notably smaller than the males. 

 A second case occurs in diurnal Lepidoptera, where the males or 

 females are more or less distinguished by a suffusion of primitive 

 or rainbow colour, as white or yellow grounds marked in the male 

 with red, and olivaceous tints replaced more or less by blue, 

 orange, purple, or green in either sex, but characteristically so 

 in the male. We will tabulate a few instances. 



INCOMPLETE COLOUR DIFFERENTIATION. 



Butterflies. Moths. 



rWhite or yellow"| 



A grounds marked I . ,, , . 

 A. .^ & , > Anthocharis. 



with red in the 



male. J 



rOlivaceous tints re-"^ Thecla. 

 T> J placed by blue, f Chrysophanus. 

 I orange, purple, f Polyommatus. 

 L or green. J D\'namine. 



Here likewise, in the instance of the Coppers, the males, 

 as a rule, are more orange than their females, but in C. zanthe 

 we find the reverse to be the case. This secondary tint again 

 may be complementary and shot, arising from longitudinal 

 bead-like striae on the wing scales; and of this the Emperors 

 (Apaiura) and Brazilian butterflies of the genera Morpho, whose 

 yellowish-brown wings, placed perpendicularly to incidental light, 

 become interferential with rich purple, afford illustration. 



In Orthoptera, Hemiptera, Homoptera, and Coleopb3ra the 

 disposition of the colours is as in cryptopterous Lepidoptera. 

 G 2 



