BUCCAL APPARATUS OP INSECTS. 



95 



which serves to divide the food. Immediately behind these 

 mandibles is found a second pair of appendages, whose structure 



FIG. 314. 



HEAD OF COCKCHAFER. 

 a, labrum ; b, mandibles ; 

 c, maxillae ; d, tongue ; 

 e, labial palpi ; /, an- 

 tennae; <7, compound eyes ; 

 h, ocelli. 



PIG. 315. PARTS OF THE 

 MOUTH OF CARABUS ; a, la- 

 brum ; 6, mandibles ; c, 

 fa* axillae ; d, labium. 



is very complicated ; these are the second pair of jaws, termed 

 the maxillae (c). Each of these last organs has on the inside a 

 plate or cylinder, of greater or less hardness, generally armed 



FIG. 316. STAG-BEETLE. 



with notches or hairs, and having on the outside one or two 

 small appendages composed of several joints, and termed maxil- 



