226 GRAMMAR OF ENTOMOLOGY. 



the others bending forward from it at a right angle, 

 forming an elbow, the three apical joints forming 

 a club ; labrum concealed or obsolete ; mandibles 

 very long, strong, and toothed ; maxillae weak 

 and pilose. Flight nocturnal. Feeds on the sap 

 of plants. Sinodendron, Lucanus, Platycerus. 



7.56. Mimick-beetles (Histerites}. Larva rather 

 more elongate than that of the Lucanites, in other 

 respects nearly similar in formation. Inhabits 

 and feeds on putrid substances. Pupa mostly 

 changes in the ground. Imago with clavate 

 antennae ; strong, corneous, and projecting man- 

 dibles ; head retractile within the prothorax ; 

 fore wings square and very short ; legs re- 

 tractile ; form a long square ; covering exces- 

 sively hard, highly polished. Inhabits putrid 

 substances ; mimicks death when disturbed ; flies 

 occasionally in the sunshine. Hister, Dendro- 

 philus, Onthophilus, Abrceus. 



757. Pill-beetles (By rr kites}. Larva as in 

 the Histerites, but somewhat pilose. Feeds on 

 the roots of vegetables and decaying wood. Pupa 

 mostly changes in the earth. Imago with monili- 

 form antennae incrassated towards the extremity, 

 but not clubbed ; mandibles corneous but not 

 projecting; form nearly globular ; covering downy, 

 not polished ; head and legs retractile. Inhabits 

 vegetables, mimicking death if touched ; crawls 

 in the day ; flies but seldom. Nosodendron, 

 Byrrhus, Aspidipliorus> Simplocaria. 



