Kirby, loc. cit. f 10, g′;) f, the upper lip, (labrum;) 7 a, the external lobe, and 7 a b, the internal lobe of the maxillæ; ax, the membranous base of the lower lip; g a, the lower lip; g b, the basal joint, and g c c, the outer joint of the labial palpi, (outer lobes of the labrium, K. and S.)
Fig. 6, one of the mandibles. Fig. 7, one of the maxillæ, destitute of maxillary palpi; a, the external lobe or galea; b, the internal lobe; c, the stipes or stalk; d, the cardo or hinge. Fig. 8, the internal tongue (lingua.) Fig. 9, the lower lip; g a, the labium; b b, the basal, and c c, the terminal joint of the plate-like labial palpi, according to Latreille, or the lateral lobes of the labium, according to Kirby. (Intr. Pl. 6, f, 12, b′.) Fig. 10, one of the antennæ (7 jointed.)
Figs. 11-13 represent the front of the body of the larva of the same insect, to shew the construction of the mask of the face and its analogous structure to the lower lip of the imago. The parts are lettered as in the preceding figures. Fig. 11, the head, with the mask at rest and closed upon the face; 4 ax, the basal portion or fulcrum (K.) by which the mask is attached to the head; g a, the lip; g c, the lobes. Fig. 12, the head, with the mask in action, opened to seize the prey; lettered as above. Fig. 13, the mask seen from below and expanded. Fig, 14, the antennæ (7 jointed,) of the larva.
The abdomen of most Neuropterous insects is of great length, compared with the other primary segments of the body. It is remarkably long and slender in the genus Agrion, particularly in the South African
species and its allies, (A. Linearis, Fabr. Leste Lucretia, Leach.) That of the male commonly terminates in two or three prehensory appendages; sometimes, in both sexes, in two or three long slender tails or filaments; and in Panorpa it ends in an articulated tube terminating in a hook. The legs,
