224 GRAMMAR OF ENTOMOLOGY. 



insect has not, when placed on its back, the power 

 of leaping possessed by the Elaterites. These in- 

 sects are diurnal ; they possess the most gorgeous 

 metallic colours ; they run and fly with ease and 

 rapidity. Buprestis. 



751. Day chafers (Cetoniites). Larva, with six 

 elongate, weak, articulate legs, and the posterior 

 extremity of the body incrassated, soft, and re- 

 curved under the fore part. Inhabits and feeds on 

 decaying wood. Pupa changes in the same situa- 

 tions, or in the ground. Imago, with antennse 

 composed of ten joints, of which the three or four 

 terminal ones are produced laterally, and form a 

 club ; labrum membranaceous, mostly concealed 

 by the clypeus ; mandibles and maxillae pubescent 

 and membranaceous ; colours various and brilliant; 

 form generally flattened above ; diurnal, flies with 

 ease and rapidity. Feeds on the farina or honey 

 of flowers. Cetonia, Trichius. 



752. Cock-chafers (Melolonthites). Larva re- 

 sembles that of the preceding order. Inhabits 

 the earth, feeding on the roots of vegetables. Pupa 

 changes in the ground. Imago with antennae 

 composed of nine or ten joints, the six or seven 

 terminal ones produced laterally, and forming a 

 flabellated club ; labrum more corneous than in 

 the preceding order, and not entirely concealed by 

 the clypeus ; mandibles corneous and masticatory ; 

 colour less brilliant ; form generally convex above ; 

 flight easy, not rapid ; mostly nocturnal. Feeds 



