CHAP. XV. FAMILIES OF COLEOPTERA. 1) < 



Sub-tribe II, In this division the body is more or less 

 elongated ; the antenna? are filiform or loosely clavate, having 

 sometimes less than three pieces in the club. 



The insects belonging to this Sub-tribe are mostly preda- 

 ceous. The principal Families are as follows : 



TROGOSITA-BEETLES (Trogositidse) . These insects have all 

 the feet five-jointed, but the. first joint is sometimes very 

 small, so that it cannot be seen from above ; the colors are 

 black or dull red ; the club of the antenna consists of three 

 joints, which are not conspicuously differing in size ; the last 

 joint of each foot is very long. 



These insects are usually found under the bark of trees, or 

 in granaries, where they prey upon other insects. The larvae 

 ar0 six-legged. 



CUCUJUS-BEETLES (Cucujidss). These insects have the feet 

 apparently four-jointed ; the body is much flattened ; the 

 Fig. 248. antennae' are usually moniliform ? and the 

 jaws generally project in a conspicuous man- 

 ner in front of the head ; the color is brown 

 or red. 



They are frequently found under the bark 

 of trees, but some kinds inhabit the granary, 

 where they feed upon the grain, bran, etc. 

 The larvse are provided with six legs. The Bran-beetle (Fig. 

 248) belongs to this Family. 



SUB-CLASS III. (Monilicornes.) 



These insects mostly belong to the Rove-beetle Family 

 (Staphylinidsi) ; the wing-cases never cover more than one 

 half of the abdomen (Fig. 249), which latter is Fig. 249. 

 long and slightly flattened, and composed of 

 eight segments ; the jaws usually cross each 

 other when at rest. 



These Beetles commonly turn up their long, 

 flexible abdomens when running, and they make 

 use of this doubling to fold up iheir wings be- 

 neatt the wing-cases. 



