CLASSIFICATION OF INSECTS. 225 



on the leaves of vegetables. HopUa, Anomala, 

 Melolontha, Amphimalla, Omaloplia, PhtjUopertha, 

 Serica. 



753. Sand-chafers ( Tro^zies). Larva resembles 

 that of the two preceding orders. Feeds on 

 decaying animal and vegetable matter found in 

 sand, which it inhabits. Pupa changes in the 

 sand. Imago with antennae composed of nine 

 or ten joints, the three or four terminal ones 

 forming a small round club; labrum and man- 

 dibles concealed and membranaceous ; colour 

 black ; form oval and very convex above. In- 

 habits sand, particularly by the sea-shore ; seldom 

 flies. Trox, JEgialia, Psammodius. 



754. Dung -chafers {Scarabceites). Larva 

 resembles the preceding. Inhabits and feeds on 

 the excrement of animals. Pupa changes in the 

 ground. Imago with antennae composed of nine 

 or ten joints, the terminal one forming a com- 

 pressed club ; labrum generally concealed by 

 the clypeus ; mandibles sometimes corneous, 

 sometimes membranaceous ; colour brown, black 

 or metallic -tinted black; form oval, convex 

 above. Inhabits and feeds as in the larva state ; 

 flight easy, rapid, mostly nocturnal. Aphodius, 

 Geotrupes, Bolboceras, Onthophagus. Copris. 



755. Stag-beetles (/:«can/<es). Larva resembles 

 the preceding ; feeding on decayed wood. Pupa 

 changes in the same situations. Imago with ten- 

 jointed antennae, the basal joint very Ion"-, and 



