BEETLES. 



Fig. 2. — Under surface of Harpalus califfinosus: a, ligula; h, paraglossa, c, sup- 

 ports of labial palpi; d, labial palpus; e, mentum; f, inner lobe of maxilla; g-, outer 

 lobe of maxilla; h. maxillary palpus: /, mandible; k, buccal opening; /, gula or 

 throat; m, m, buccal sutures; a, gular suture; o, pro-sternum, p', episternum of 

 .pro-thorax; p, epimeron of pro-thorax; f/, q', q" . cox£e; r, r', r", trochanters; 

 s, s', s", femora or thighs; t, t', t", tibiae; v, v'^, v3, etc., ventral abdominal seg- 

 ments; w, episterna of meso-thorax (the epimeron is just behind it); x, meso- 

 ternum; y, episternum of meta-thorax; .t ', epimeron of meta-thorax; z, meta- 

 sternum. After I,econte. 



labrum is usually distinct; the mandibles are strong jaws which 

 can be used for g-nawing and for seizing the prey; the compHcated 

 iiuLvillac 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. A]\ tlicsc parts are shown in Figs. 2, 4. 5 and 7. 



