ARTHKOPODA. 



135 



XYLOPHAGA. Head not rostrate. Antennae short, claviform or 

 perfoliate. Maxillae with one lobe. Wood-feeders. 



The head is sometimes terminated by a short muzzle, but not 

 a true rostrum, the antennas not being inserted on it, or at any 

 distance from the eyes. In the larval state these insects do im- 

 mense damage to trees. Bostrychidae, with which the Xylophaga 

 are sometimes confounded, have, inter alia, a two-lobed maxilla. 



