BEETLES. ir>7 



Family XLTI. SCOLYTID^ (Bostryciiid/E). 



Body cylindrical, usually truncated behind. Head more or 

 less retracted into the pronotum, not drawn out into a 

 proboscis. Antennae with a large thick club. They live 0:1 

 trees, and often do considerable damage. 



Genus Hylastes, Erichs. 



Tips of the elytra not convex. Antennae filiform, with the 

 club rounded and compressed. They live under the bark 

 of pines. 



* H. ater, Payk. (Plate XIV., Fig. 21). Black, with the end 

 of. the proboscis pressed in. Antennae and tarsi reddish-brown. 

 It is common under the bark of pine-trees. 



* H. {Hylurgus) piniperda, Linn. (Plate XIV., Fig. 22). 

 Black, with brown wing-cases, and rusty-red antennae and 

 tarsi. It lives under the bark of pine-trees. The lar-vae 

 live in the shoots, which become brown, and then fall off. 



H. (Dendrodonus) micans, Kug. (Plate XIV., Fig. 23). 

 Black, brown, or yellowish-brown, clothed with long greyish- 

 yellow hair. The elytra are granularly punctured. It is 

 found under the bark of pine-trees, and is a native of Northern 

 and parts of Central Europe. 



* H. (Scolytus) pruni, Ratzeb. (Plate XIV., Fig. 24). 

 Shining black, with the front and hind margins of the 

 pronotum and the elytra brow^n. It is found under the 

 bark of old plum and other fruit trees. 



Genus Bostrychus, Fabr. (Tomicus, Latr.) 



Tips of the elytra depressed. AntennaB filiform, five-jointed, 

 with a large ringed terminal club and five- jointed flagellum. 

 They are found in or under the bark of trees and shrubs. 



