THE CANADIA.N ENTOMOLOGIST. 



S3 



Fk;. 12. 



Orthosoma, Serv. 



Represented by O. brtinneum, Forst. (Fig. 

 12), a large brown insect, .88 to 1.60 in. long, the 

 elytra nearly parallel-sided, shining and rather 

 thickly punctured. Prothorax more coarsely sculp- 

 tured above than the elytra, each side with three 

 sharp teeth. The head bears a deep, sharp im- 

 pression between the eyes. The basal antennal 

 joints are stouter in the males than in the females. 

 I have found the larvje in rotten pine timbers 

 under sidewalks. 



Prionus, Geoff. 



The largest Cana- 

 dian Longhorn is P. laticollis, Drury (Fig. 13). 

 It varies in length from .88 to 1.88 in., and is 

 of a brownish or blackish colour, the prothorax 

 almost or quite as broad as the base of the 

 elytra, sides with three teeth, of which the pos- 

 terior is sometimes poorly marked. The elytra 

 are much broader at base than at apex. An- 

 tennae twelve-jointed in both sexes, much heav- 

 ier in the male. The larva (Fig. '14) is said to 

 injure the grape, poplar, apple, and pine, by 

 boring in the roots. 



Fig. 13- Tragosoma, Serv. 



T. Harrisii, Lee. (now considered by some writers as identical with 

 the European T. depsarium, L.), is a curious-looking beetle of elongate 

 form and brownish colour. The antennas are slender, the prothorax 

 small in comparison with the elytra, very hairy and armed on each side 

 with a single 

 sharp tooth, in 

 front of which 

 the lateral mar- 

 gins are con- 

 vergent. The 

 elytra are shin- 

 ing, distinctly 

 punctured and 



with numerous longitudinal raised lines. I have taken the species under 

 pine bark. It varies in length from 1.20 to 1.40 in, 



Fig. 14. 



