. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. 5G2 IXSECTA. winged insect, which is now in the subimago stage, undergoes another ecdysis and becomes an imago. Ephemera vulgata L. (tig. 405). Palinrjcnia longi- tauda Oliv. Fam. Libellulidae. Dragon flies. Large slenderly-built insects with freely moveable, transversely cylindrical head, short six- to seven-jointed thin and pointed antenna?, and four large net-like latticed wings. The mouth parts arc powerfully developed, and are covered by the large upper lip. The maxillns have fused hor
. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. 5G2 IXSECTA. winged insect, which is now in the subimago stage, undergoes another ecdysis and becomes an imago. Ephemera vulgata L. (tig. 405). Palinrjcnia longi- tauda Oliv. Fam. Libellulidae. Dragon flies. Large slenderly-built insects with freely moveable, transversely cylindrical head, short six- to seven-jointed thin and pointed antenna?, and four large net-like latticed wings. The mouth parts arc powerfully developed, and are covered by the large upper lip. The maxillns have fused horny lobe, and single-jointed sickle-shaped palp. The labium has a simple or divided internal lobe and separate outer lobes fused with the bi-jointed palp. The abdomen has ten joints, and on the last segment two nnjointed anal styles opposed to one another, so as to form a sort of forceps. They live near water, and feed on other insects. The two sexes are usually of different colours, and their flight is rapid and prolonged. During copulation the male clasps the prothorax of the female with his abdominal forceps, while she bends her abdomen towards the base of his abdomen. Here is placed the copulatory organ, which is remote from the genital opening, and is filled with sperm prior to copulation. The larvie live in water and are prcdaccous. The ower lip is modified to form a special predatory apparatus (the mask) (fig. 456). Many of them breathe by means of tracheal gills, which are placed at the end of the abdomen or in the rectum. Calopti' rirtjo L., Agriun pudla L., JEschna grand is L., Lilcllula vulgata,ftavcola L. Order 3.—Neuroptera.* Insects ivith biting (sometimes also suctorial} mouth parts, with free prothorax and mem- branous wings, the nervures of which form a net-work. The metamorphosis is complete. Most Newroptera have an outward re- TSS^Slf """"^ semblance to the Libellulidce and Epheimrida, while others resemble the Lepidoptera in their sc
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