. Elements of entomology: an outline of the natural history and classification of British insects. Insects -- Great Britain. 204 THE PLANIPENNIA. wards, but tlie abdomen is still retained in the pupa- skin for some time. At length, however, it begins to exert itself, and draws the abdomen out of its case, which is left clinging firmly to its support, and after waiting for an hour or two to allow its wings to acquire their proper dimensions and firmness, the liberated Dragon-fly darts off to carry on his old trade of rapine and murder in a new Hemerobius Perla. With the Dragon-flies, t
. Elements of entomology: an outline of the natural history and classification of British insects. Insects -- Great Britain. 204 THE PLANIPENNIA. wards, but tlie abdomen is still retained in the pupa- skin for some time. At length, however, it begins to exert itself, and draws the abdomen out of its case, which is left clinging firmly to its support, and after waiting for an hour or two to allow its wings to acquire their proper dimensions and firmness, the liberated Dragon-fly darts off to carry on his old trade of rapine and murder in a new Hemerobius Perla. With the Dragon-flies, those most active and vora- cious of the denizens of the air^ we quit the series of Neuropterous insects in which the larva, pupa, and imago are alike active, and pass to a second suborder, that of the Planipennia, in which the pupa is quiescent*, the organs of the mouth are perfectly developed, and the wings, which are naked and nearly equal in size, are laid flat upon the back, or in a roof-like form upon the sides, without any folding of the hinder pair. The antennae in these * It is to be observed, however, that the pupa acquires the power of motion shortly before its appearance in the perfect state, and is thus enabled to creep from the retreat in which it has passed its period of repose, in order to select a suitable situ- ation for undergoing its last Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Dallas, W. S. (William Sweetland), 1824-1890. London, J. van Voorst
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectinsectsgreatbritain
