67 



beetle, Magdalis armicollis^ vSay. is said to infest tlie elm, hut I 

 do not know anything of its hahits. 

 Another beetle known as the 



RED SIIOULDEREn SIXOXYLON, 



though attacking fruit and other trees is also found upon tlie elm. 

 Tliis beetle is one of 'a large group of boring beetles. Its scientific 

 name is Sinoxyloti basilare^ Say. It is ])lack with a red spot on 



Figure 49. 



Sinoxylon basilare, Say. 

 a. larva, b. pupa, c. beetle. All enlarged. 



the anterior portion of each wing cover. The form of this insect 

 and general appearance is shown in figure 49. The larva is white 

 or yellow. It bores into the wood of the tree, which it infests, and 

 if in any considerable numbers may do considerable harm. 



Another boring beetle which confines its labors chiefly to the 

 bark of the peach and other trees, is Phloeotribus liminaris^\\<\.xx. 

 This is said to attack the elm, and has ever been called elm-bark 

 beetle, but it appears doubtful if it ever attacks the elm. Another 

 little boring beetle, Hylesiniis opaculns L. C, verv closely re- 



Figure 50. 



Hylesinus opaculns, Le. Con. 



