202 MANUAL OF NATURAL HISTORY. 



II. TRIBE. BENT-HORNED SNOUT-BEETLES 

 (Gonatocerata). 



Antennae elbowed, basal joint elongated, inserted 

 in an elongated canal on side of rostrum. 



78. FAMILY. Weevils (Curculionidae). Antennae 



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. Rostrum short, thick ; anten- 



nae inserted near its extremity. 



2. RhynchoBnince. Rostrum cylindric 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-BLETLES (Longicornes). 



Head not produced in front into a rostrum ; palpi 

 conspicuous; labrum more or less conspicuous, rarely 

 obsolete ; mandibles generally large, robust ; an- 



