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Lesson, on the birds of paradise; on the sea-elephant. Lessona, M., observations on Serranus. Lethrus cephalotes, pugnacity of the males of. Leuciscus phoxinus. Leuckart, R., on the vesicula prostatica; on the influence of the age of parents on the sex of offspring. Levator claviculae muscle. Libellula depressa, colour of the male.
I saw at once that it was the nest of a termite, or ant, which the Mexicans call comejen. "It is a nest of white ants," I said to my son; "they are insects of the neuropteral order, and allied to the libellula." "But where are they?" "You will soon see," I answered.
MacLachlan believes that in the male of Libellula depressa this change of colour does not occur until nearly a fortnight after the metamorphosis, when the sexes are ready to pair.
These insects, among which is a libellula, or dragon-fly, must have been blown out to sea, probably from the same land to which the pterodactyls, and other contemporaneous air-breathers, resorted. Tail and feather of Archaeopteryx, from Solenhofen, and tail of living bird for comparison. A. Caudal vertebrae of Archaeopteryx macrura, Owen; with impression of tail- feathers; one-fifth natural size.
The terrible spider "crouching on the battlements of his castle, his heavy belly in the sun, attentive to the slightest rustling, leaps upon whatever passes, fly or Libellula, and with a single stroke strangles his victim, and drains its body, drinking the warm blood."
A Beetle or a Butterfly is to be recognised as such at the first glance, but only a thorough investigation can demonstrate the mutual relationships of Termes, Blatta, Mantis, Forficula, Ephemera, Libellula, etc.
Let the terrible hornet, or the Libellula auripennis, flying from stem to stem, fall into the limed snare; the insect struggles, endeavours to unwind itself; the net trembles violently as though it would be torn from its cables. Immediately the spider darts forward, running boldly to the intruder.
Libellula auripennis I have often seen laying eggs, and I think I was not deceived in my observation that she dropped a bunch of eggs into the open ditch while balancing herself just a little way above the surface of the water. I have, also, seen her settled upon the reeds in brackish water with her abdomen submerged in part, and there attaching a cluster of eggs.
Now, as Cousin Benedict had confined himself to the study of the articulates of this class, he was only an entomologist. But, let us not be mistaken about it. In this class of the insects are counted not less than ten orders: 1. Orthopterans as grasshoppers, crickets, etc. 2. Neuropters as ant-eaters, dragon-flies or libellula. 3. Hymenopters as bees, wasps, ants. 4.
The body is variously banded with rich shades of blue, green, and yellow, and the wings give off the most beautiful iridescent and metallic reflections. During July and August the various species of Libellula and its allies most abound. The eggs are attached loosely in bunches to the stems of rushes and other water-plants. In laying them, the Dragon fly, according to Mr.
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