202 MANUAL OF NATURAL HISTORY. 



II. TRIBE. — Bent-hoened Snout-Beetles 



(Gonatocerata). 



Antennae elbowed, basal joint elongated, inserted 

 in an elongated canal on side of rostrum. 



78. Family. — Weevils (Curculionidae). Antennas 



elbowed, basal joint elongate, second joint 

 inserted obliquely at its end, three or four 

 terminal ones forming a club; labrum obso- 

 lete; palpi minute, conical; head produced 

 into a rostrum, at the end of which the 

 mouth is placed, its sides with a groove to 

 receive the antennae ; body oval, narrowed 

 in front. 



1. Curculionince. Kostrum short, thick ; anten- 



nae inserted near its extremity. 



2. Rhynchoenince. Rostrum cjdindric or filiform, 



elongate, antennae inserted between its base 

 and middle. 



79. Family. — Wood-eating Snout-Beetles (Scolyti- 



dae). Antennae short, slightly elbowed, basal 

 joint elongate, apical joints forming a more 

 or less solid mass ; labrum obsolete ; max- 

 illae thin, broad, spined externally; palpi 

 conical, minute; body oblong, convex; tibiae 

 hooked at tip. Burrowing in trunks of trees ; 

 causing great injury in pine-forests and parks. 



XV. SUB-ORDER. — Longicokn-Beetles (Longicornes). 



Head not produced in front into a rostrum ; palpi 

 conspicuous ; labrum more or less conspicuous, rarely 

 obsolete ; mandibles generally large, robust ; an- 



