CLASSIFICATION OF INSECTS. 237 



of neck ; prothorax nearly square, very flat ; body 

 very flat ; tarsi four-jointed. Inhabits timber. 

 Cucujus. 



782. Timber-beetles (Bostricites). Larva a 

 white maggot, completely without legs ; inhabits 

 and feeds on the bark or wood of trees, causing 

 their death with unerring certainty. Pupa changes 

 in the same situations. Imago with clavated 

 antennae ; mandibles generally bidentate ; max- 

 illae with their galea obtuse ; the prothorax very 

 convex, and usually as large as the remainder of 

 the body; tarsi four-jointed; form cylindrical. 

 Inhabits circular holes, which it bores in the bark 

 and wood of trees, either to escape, after changing, 

 from the pupa, or to deposit its eggs. Cis, 

 Bostrichus, Tomicus, Platypus, Hylesinus, Sco- 

 lytus, Hylurgus. 



783. Long-nosed weevils (Curculionites). Larva 

 without legs, and having occasionally in their place 

 small mamillary processes ; inhabits and feeds on 

 the flowers, fruits, seeds, leaves, stalks, bark, wood, 

 pith, and roots of vegetables. Pupa changes in 

 the same situations, sometimes naked, sometimes 

 in a hard compact case, sometimes in a silken 

 cocoon. Imago with antennae generally twelve- 

 jointed, incrassated externally, the basal joint 

 generally very long, the others bending forwards 

 at a right angle, forming an elbow; these antennae 

 are placed on a long rostrum, which proceeds from 

 between the eves, and has the mouth at its 



