GRAPTA I. 
Comma, nor Faunas, I presume it was Gracilis, as Mr. Couper conjectured. It 
certainly was not Faunas, which is party-colored, in the general style of that 
of C album and of Zepliyrus, but with differences. We owe this discovery of 
Faunas larva to Mr. Scudder, who took mature specimens on willow in the 
White Mountains, in 1873, and who will publish a description and illustration of 
it in his forthcoming work on the “ Butterflies of New England.” Willow is an 
unusual food-plant for a Grapta, and not set down as one to which C album is 
addicted. 
It is desirable that the several American species of Grapta, where the larvae are 
not already thoroughly known, should be experimented with, and lepidopterists 
having access to any of them, will do good service if they will take pains to 
obtain the eggs in the manner I have indicated. This is always practicable 
where the food-plant is known, and may be found so where the plant is only 
matter of conjecture, by testing the butterfly with any or all of the plants on 
which other Grapta larvae feed. The larvae are easily raised, being hardy and 
bearing confinement well, and as they mature rapidly there is very little trouble 
in breeding them even from the egg. It is easy to determine the female in this 
genus, apart from the plainer color and lesser degree of ornamentation that 
characterizes her as compared with the male. In the latter, the aborted forelegs 
which may be seen folded down upon the thorax are thick and furry ; in the 
female, thin and slightly clothed. This peculiarity was first pointed out to me 
by Mr. J. A. Lintner, and I have often had occasion to test its value, especially 
in cases of abraded specimens, where the distinctive markings and colors were 
much obliterated. 
