226 THE CANADIAN ENTOMOLOGIST. 



8. Oberea tripunctata Fab. — The Raspberry Borer. — We now come 

 to the last insect on our plate ; the figure is a good deal exaggerated in 

 size, the length of the beetle being under half an inch, and its width one- 

 tenth of an inch. Its colour is deep black, with the exception of the 

 thorax above and the front part of the breast beneath, which are rusty 

 yellow ; on the thorax there are three small elevated black dots arranged 

 in a triangle (not two only, as in the figure), whence is derived the specific 

 name of the insect. The antennae are nearly, if not quite, as long as the 

 body. The beetles are usually found in July and the beginning of August ; 

 they attack all the varieties of raspberry, and come into gardens from the 

 fields and clearings, where we have often taken specimens and observed 

 their work. The mode of attack is peculiar : the first appearance of 

 injury is usually manifested by the withering and drooping of the ends 

 of the young shoots. On inspection, it is found that at Ifiie base of the 

 affected part there are two rows of punctures, half an. inch apart, running 

 completely round the canes, and so girdling them that the supply of sap 

 is stopped and the tops necessarily soon wither and break off. The parent 

 insect begins by cutting with its jaws a series of small punctures side by 

 side around the cane, six or seven inches from the top. As soon as the 

 first row is completed, it turns round, and facing the other way, cuts a 

 second row measuring the length of its own body. These two girdles 

 being completed, it makes a small hole a little way above the lower girdle 

 and deposits in it its small yellow egg. The whole operation occupies an 

 hour or more. From this egg there hatches out in a ^q.v^ days a small yel- 

 low footless grub, which proceeds to burrow downwards, eating the pith 

 of the cane and eventually causing its destruction. 



In order not to occupy too much space, we have forborne to make 

 any mention of remedies which have been applied with more or less suc- 

 cess to combat the ravages of these destroyers. Should any of our readers 

 desire information upon this point, we beg to refer them to the Entomo- 

 logical Society's forthcoming Report to the Legislature, which will include 

 many particulars regarding these insects which we have not given above. 



American Entomological Society — Notice of Removal. — The 

 American Entomological Society has removed to the south-west corner 

 of Nineteenth and Race Streets, Philadelphia, Pa., where all correspond- 

 ence, &c., should be addressed. Chas. A. Blake is Corresponding Sec'y. 



