OF INSECTS. 
289 
Kirby, loc. cit. f 10, g*;) /, the upper lip, (labrum ;) 7 a, 
the external lobe, and 7 a b, the internal lobe of the maxillae ; 
a*, 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 maxillae, 
destitute of maxillary palpi *, a, the external lobe or galea ; 
b, the internal lobe ; c, the stipes or stalk ; d , the eardo or 
hinge. Fig. 8, the internal tongue (lingua.) Fig. 9, the 
lower lip ; g a, the labium ; b b , the basal, and o c , the 
terminal joint of the plate-like labial palpi, according to 
Latreille, or the lateral lobeB of the labium, according to 
Kirby. (Intr. PI. 6,/, 12, b\) Fig. 10, one of the antennas 
(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. 1 1 , 
the head, with the mask at rest and closed upon the face ; 
4 a x , the basal portion or fulcrum (K.) by which the mask is 
attached to the head ; g a, the lip ; g c 9 the lobes. Fig. 
12, the head, with the mask in action, opened to seize the 
prey •, lettered as above. Fig. 1 3, the mask seen from below 
and expanded. Fig. 14, the antennse (7 jointed,) of the 
larva. 
The abdomen of most Neuropterous insects is of 
great length, compared with the other primary seg- 
ments 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 Lu- 
cretia, Leach.) That of the male commonly termi- 
nates in two or three prehensory appendages ; some- 
times, in both sexes, in two or three long slender 
tails or filaments ; and in Panorpa it ends in an arti- 
culated tube terminating in a hook. The legs, 
T 
