Pallas once saw such vast flights of the orange-tipped Butterfly, _Pontia cardamines_, in the vicinity of Winofka, that he at first mistook them for flakes of snow.[772] At Barbados, some days previous to the hurricane in 1780, the trees and shrubs were entirely covered with a species of Butterfly of the most beautiful colors, so as to screen from the sight the branches, and even the trunks of the trees. In the afternoon before the gale came on, and when it was quite still, they all suddenly disappeared. The gale came on soon after.[773] Darwin tells us that several times, when the “Beagle” had been some miles off the mouth of the Plata, and at other times when off the shores of Northern Patagonia, the air was filled with insects: that one evening, when the ship was about ten miles from the Bay of San Blas, vast numbers of Butterflies, in bands or flocks of countless myriads, extended as far as the eye could range. The seamen cried out “It was raining Butterflies,” and such in fact, continues Darwin, was the appearance. Several species were in this flock, but they were chiefly of a kind very similar to, but not identical with, the common English _Colias edusa_. Some moths and hymenopterous insects accompanied the Butterflies; and a fine beetle (_Calosoma_) flew on board.[774] Captain Adams mentions an extraordinary flight of small Butterflies, with spotted wings, which took place at Annamaboo, on the Guinea coast, after a tornado. The wind veered to the northward, and blew fresh from the land, with thick mist, which brought off from the shore so many of these insects, that for one hour the atmosphere was so filled with them as to represent a snow-storm driving past the vessel at a rapid rate, which was lying at anchor about two miles from the shore.[775] Mr. Charles J. Anderson encountered, in South-western Africa, for two consecutive days, such immense myriads of lemon-colored Butterflies that the sound caused by their wings was such as to resemble “the distant murmuring of waves on the sea-shore.” They always passed in the same direction as the wind blew, and, as numbers were constantly alighting on the flowers, their appearance at such times was not unlike “the falling of leaves before a gentle autumnal breeze.”[776] In Bermuda, October 10, 1847, the Butterfly, _Terias lisa_ of Boisduval, suddenly appeared in great abundance, hundreds being seen in every direction. Previous to that occasion, Mr. Hurdis, the observer of this flight, had never met with this Butterfly. In the course of a few days, they had all disappeared.[777]