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With regard to the ducks, Ramsbottom is again my authority. He found that a flock of tame ducks frequented the spawning beds at Oughterard; he bought one for the purpose of ascertaining whether they eat spawn or not, and he found its crop quite full of spawn. With regard to the aquatic larvae of insects, Mr.
The belief in the essential identity of the process of alternate generation and of ordinary metamorphosis has been greatly strengthened by Wagner's discovery of the larva or maggot of a fly, namely the Cecidomyia, producing asexually other larvae, and these others, which finally are developed into mature males and females, propagating their kind in the ordinary manner by eggs.
It was a season of gloom such as our frontier states had never known, and to add to the general depression there was a growing conviction that the hatching of the grasshoppers' eggs when warm weather came would complete the famine. To support his action in refusing to go East, Josiah Farnshaw asserted stubbornly that the frost of their hard winter would certainly kill the larvae of the locusts.
Certain wasp-like insects, which construct in the corners of the verandahs clay cells for their larvae, are very numerous in the neighbourhood of Rio.
There are three different species: C. aurata, C. morio and C. floricola. Most of them belong to the first species. Their larvae, which are easily recognized by their singular talent for walking on their backs with their legs in the air, are numbered by the hundred. Every age is represented, from the new born grub to the podgy larva on the point of building its shell.
Those which, like the moths, had only made their first venture on earth, now appeared in greater numbers. Near Aix, in Provence, five butterflies and two moths were found in some beds of marl and gypsum long celebrated for their fossils, and with the fossil butterflies were, in every case but one, fossil remains of the plants which had served its larvae as food.
Other larvae in fourth stage, velvety black, with coral-red spines; others with black spines. 5th stage. Larvae, entirely black, with showy eye-like spiracles, polished black head; other larvae having the head brown and black. Larvae covered with long white hair; spines black or red. No difference noticed between the fifth and sixth stages.
The ichneumon-fly lays its eggs under the skin of the caterpillar. The eggs are hatched by the warmth of the caterpillar's blood. They produce a brood of larvae which devour the caterpillar alive. A pretty child dances on the village green. Her feet crush creeping things: there is a busy ant or blazoned beetle, with its back broken, writhing in the dust, unseen.
She founded it amid uncertainty and poverty. She has peopled it with her own substance; and all who move within its walls workers, males, larvae, nymphs, and the young princesses whose approaching birth will hasten her own departure, one of them being already designed as her successor by the "spirit of the hive" all these have issued from her flanks.
If this is correct, a short-lived larva stage must, instead of causing small cocoons, produce just the contrary effect." In another letter, dated November 25, 1881, my correspondent says: "I am sorry that you have not had better success in the rearing of your larvae, but you should not despair.
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