BEETLES. 



labrum is usually distinct ; the mandibles are strong jaws which 

 can be used for gnawing and for seizing the prey; the complicated 

 maxillae are also well developed and are composed of several 

 pieces; the maxillary palpi are usually prominent; the lower lip or 

 labium is composed of several pieces, and bears prominent labial 

 palpi. All these parts are shown in Figs. 2, 4. 5 and 7. 



