142 THE CANADIAN ENTOMOLOGIST. 



the wing cases join the thorax. The transparent gauzy wings, which are 

 concealed when not in flight under the wing cases, are dark brown. The 

 under side of the beetle is of a dark green shade, with a metallic lustre 

 and downy about the middle, with fine brownish hairs ; legs dark shining 



green. 



It appears with us during July and August, and is moderately active 

 during the day time, flying about from vine to vine with a heavy awkward 

 flight and loud buzzing noise. After pairing, the female deposits her 

 eggs in rotten wood, on which the grub, when hatched, feeds; the decaying 

 stumps and exposed roots of different trees are usually selected for this 

 purpose. Mr. Riley, of St. Louis, Mo., was the first to describe this 

 larva, and we quote his description as given in the American Entomolo- 

 gist, vol. 2, p. 295 : 



" It is a large, clumsy grub, bearing a close resemblance to the 

 common white grub of our meadows, and differs from that species 

 principally in having the skin more polished and of a purer white color, 

 and in the distinct heart-shaped swelling above the anus, fig. 24, d. 

 Towards the latter j^art of June we have found this larva (fig. 24, a), in 

 common with the pupa {h), in rotten stumps and roots of the pear. In 

 preparing for the pupa state the larva forms a rather unsubstantial cocoon 

 of its own excrement, mixed with the surrounding wood. The pupa 

 state lasts but from eight to ten days, and the beetle ic) is found on our 

 vines during the months of July, August and September. It is not yet 

 known how long a time is required for the developement of the larva, but 

 from analogy we may infer that the insect lives in that state upwards of 

 three years." 



In the figure, e shows the antenna of the larva, and / one of the legs 

 — both magnified. 



This insect in our Domtnion is confined mainly to the province of 

 Ontario, and prevails most in the western section. We are not aware of 

 its having been found at all in Quebec. It is common in most of the 

 Western and Eastern States. Should it become sufficiently numerous in 

 any section to excite alarm, it may readily be checked by hand picking ; 

 the insect being heavy and clumsy in its movements, may be easily 

 captured and destroyed. 



