216 
Observations on the various Insects 
Fig. 14.* Jiind-leg of Slater obscurus. 
Fig. 15.* Male organs of generation of E later pectinicornis. 
p* Apical segment of abdomen. 
q* Central instrnment. 
Fig. 16.* Female organs of generation or ovipositor in the same species. 
r* The external lobes enclosing the oviduct. 
Fig. 11.* Apical abdominal segment and female organs of generation of 
Elaler obscuru^. 
s* Tiie two horny lobes uniting and enclosing the ovi- 
duct. 
Fig. 18.* Male organs of generation in the same species. 
t* The centra! instrument. 
Fig. 19.* The under side of thorax of Elaler ohscurus. 
0* One of the grooves for receiving the antennae in re- 
pose. 
u* Cavities receiving the first pair of legs. 
V* Spine employed in leaping. 
Fig. 20.* Postpectus, with one of the hinder legs attached. 
IV* Caviiies receiving the second pair of legs. 
X* Coxte or hips, to which the third pair of legs is 
attached. 
y* The cavity into which the spine v fits. 
Fig. 21.* Labrum, or upper-lip of the beetle called Elaler ob'^curus. 
Fig. 22.* Mandiblex, OT ')i\\\s of do. 
Fig. 23.* Mentum, or chin of do. 
z* Labium, or under-lip. 
a* Palpi, or feelers. 
Fig. 24.* Maxillce, with their hairy lobes. 
b* Palpi, or feelers. 
Fig. 25. Elaler {Agriotes) obscurus, in outline. 
Fig. 25.* The same magnified and shaded. 
Fig. 26.* Elaler lineahis, represented flying. 
c The natural dimensions. 
Fig. 2*7.* Hind-leg of Elaler ruficaudis. 
d* The Tarsus, or foot, showing the fourth minute 
joint. 
Fig. 28. A young wheat-plant; the dotted line denoting the surface of 
the soil. 
Fig. 29. A small Wireworm feeding in the base of the stem in the earth. 
Fig. 30. A young turnip-plant, with its roots bitten off by the Wire- 
worms. 
e A portion near the base gnawed by them. 
Obs. — All the figures are drawn from nature; and the foregoing 
numbers and letters with a * attached indicate that the objects referred 
to are represented much larger than life. 
London, Nov., 1843. 
