COLEOPTERA. 



421 



quite large, and there is but a pair of ocelli, when present, or 

 there may be but a single ocellus. The antennae are generally 

 inserted just in front of the eyes, and rarely between them aa 



Fig. 346. 



in the previous suborders. They are either filiform where the 

 joints are cylindrical, as in the Carabidce, not enlarging 

 towards the end, or serrate, as in the Elateridce, where the 



buccal opening; I, giila or throat; m, m, bnccal sutures; n, gular suture; o, pro- 

 sternum 5X1 episternum of prothorax; p, epimeron of prothorax; gvg*i <?"i coxae,' 

 r, r>, r", troohanters; s,s',s", femora or thighs; t, t',t", tibiae; v, t> 2 ,v 3 , etc., ventral 

 abdominal segments; w, episterna of mesothorax (the epimeron is just behind it); 

 x, mesoternum ; y, episternum of metathorax ; y', epimeron of metathorax ; z, meta- 

 stcrnum. 



FIG. 346, upper surface of Necrophorus Americanus. (After Leconte.; a, man- 

 dible ; b, maxillary palpus ; c, labrum ; d, clypeus ; e, antennae ; f, front ; g, vertex ; 

 h, occiput; i, neck; fc, eye; I, pronotum (usually called prothorax); m, elytron; n, 

 hind wing; o, scutellum (of mesothorax) ; p, metanotum (or dorsal surface of meta- 

 thorax); q, femur or thigh; r, r, r, tergites of the abdomen; s, s 2 , s 3 , spiracles 01 

 stigmata ; t, f, t", tibiae ; v, tibial spurs ; w, tarsi. 



