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The Heliconidae, a tribe of butterflies peculiar to tropical America, with long, narrow, weak wings, are distasteful to most animals: I have seen even spiders drop them out of their webs again; and small monkeys, which are extremely fond of insects, will not eat them, as I have proved over and over again.
Hedge-warbler, young of the. Heel, small projection of, in the Aymara Indians. Hegt, M., on the development of the spurs in peacocks. Heliconidae, mimicry of, by other butterflies. Heliopathes, stridulation peculiar to the male. Heliothrix auriculata, young of. Helix pomatia, example of individual attachment in. Hellins, J., proportions of sexes of Lepidoptera reared by.
'Transact. Linn. It had previously been observed that certain butterflies in S. America belonging to quite distinct families, resembled the Heliconidae so closely in every stripe and shade of colour, that they could not be distinguished save by an experienced entomologist.
Thus in some butterflies that mimic the Heliconidae, the females only are mimetic, the males retaining the normal form and coloration of the group to which they belong.
As the Heliconidae are coloured in their usual manner, whilst the others depart from the usual colouring of the groups to which they belong, it is clear that the latter are the imitators, and the Heliconidae the imitated. Mr. Bates further observed that the imitating species are comparatively rare, whilst the imitated abound, and that the two sets live mingled together. 'Proc. Belt. Hence Mr.
Amongst the numerous butterflies, large blue Morphos and narrow, weak-winged Heliconidae, striped and spotted with yellow, red, and black, were the most conspicuous and most characteristic of tropical America.
Before attempting to answer these questions a body of facts must be given. This is also the case with the magnificent Heliconidae, and most of the Danaidae in the tropics. But in certain other tropical groups, and in some of our English butterflies, as the purple emperor, orange-tip, etc. No language suffices to describe the splendour of the males of some tropical species.
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