. The American entomologist. Entomology. THE. VOL. 1. ST. LOUIS, MO., JUNE, 1869. NO. 10. CIjc ^.mcricaii (iBuiamologbt. PUBLISHED MONTHLY BY ?R. F. '2- Sc CO., 104 OLIVE STREET, ST. LOUIS. TK UlIS One aolliir per annum in advance. EDITORS .- i; U. WALSH Hock Island, 111. (HAS. V. IlILKY. 2130 Clark Ave St Louis, Mo. liUTTRKFLlES. Tlii-re is a particular group of Butterflies, which is kuown to entomologists as the Danais iaiiiily, and of wliicli the very common N. A. species, represented on page 11)1 (Fig. 132) may be tatcen as an example. The different species belong
. The American entomologist. Entomology. THE. VOL. 1. ST. LOUIS, MO., JUNE, 1869. NO. 10. CIjc ^.mcricaii (iBuiamologbt. PUBLISHED MONTHLY BY ?R. F. '2- Sc CO., 104 OLIVE STREET, ST. LOUIS. TK UlIS One aolliir per annum in advance. EDITORS .- i; U. WALSH Hock Island, 111. (HAS. V. IlILKY. 2130 Clark Ave St Louis, Mo. liUTTRKFLlES. Tlii-re is a particular group of Butterflies, which is kuown to entomologists as the Danais iaiiiily, and of wliicli the very common N. A. species, represented on page 11)1 (Fig. 132) may be tatcen as an example. The different species belonging to this group are most of them remarkable for occurring in very great numbers in those countries which they inhabit. Their wings are rather longer than usual, but their flight, compared with that of many other Butter- flies, is slow, and they do not dodge and zig-zag about, with many snddeu skips and jerks in their travels through the air, as do the little butterflies known as Skippers {Resperia family). Hence we cannot assume that they are enabled, by their peculiar mode of flying, to escape to a great extent those cannibal animals that would otherwise catch and devour them; and if we propose to account for their prodigious abundance at all, we are driven to have recourse to some other liypothesis. Indeed, so far is it from being the case that it is their mode of flight which enables them to escape from their .iiunibal foes, that Mr. 11. W. Bates, the Eng- lisli naturalist, who spent eleven years in the N'alley of the Amazon Kiver, studying the Natural History of the insects of that region, where this particular group of Butterflies is very copiously represented, declares that he never saw a single one of them attacked by any cannibal foe whatever, whether Bird, or Dragon- fly, or Lizard, or Asilus-fly. Hence he infers, with great appearance of reason, that they must be from some cause or other unpalatable to animals of prey; and in coidirmation of tliis idea, he remarks t
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