COLEOPTERA. 261 



quently become somewhat kidney- shaped ; the head is not 

 elongated at its junction, but is partly 

 received into the prothorax ; mandibles 

 with an acute point ; maxillae and their 

 galea obtuse ; tarsi four-jointed ; form 

 elongate, nearly linear, slightly attenuated 

 posteriorly : flight both diurnal and noc- 

 turnal. Inhabits the stems of trees, de- 

 cayed wood, and sometimes flowers. 

 Heliomanes, Clytus, Callidium, Cylin- 

 der a, Obrium, Gracilia^ Saperda, Lamia, Cerambyx, 

 Prionus. 



Flat-bodied-beetles or Cucujites. Larva with six very 

 short articulate legs ; found in decayed timber. Pupa 

 changes in the same situations. Imago with filiform an- 

 tenna generally not longer than the prothorax ; mandibles* 

 acute, porrected, and elongate, especially in the males ; 

 maxilla obtuse ; galea pilose ; head somewhat triangular, 

 elongated posteriorly into a kind of neck ; prothorax 

 nearly square, very flat; body very flat ; tarsi four-jointed. 

 Inhabits timber. Cucujus. 



Timber-beetles or Bostricites. Larva a white maggot, 

 completely without legs ; inhabits and feeds on the bark 

 or wood of trees, causing their death with unerring cer- 

 tainty. Pupa changes in the same situations. Imago with 

 clavated antenna ; 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 es- 

 cape, after changing, from the pupa, or to deposit its eggs. 

 Cis, Bostrichus, Tomicus, Platypus, Hylesinus, Scolytus, 

 Hylurgus. 



Long-nosed weevils or Curculionites. Lcirva without 



