310 THE CANADIAN ENTOMOLOGIST. 



Mr. Young has kindly sent me a drawing illustrating his observations 

 on the habits of the larva and the following notes : 



"The young larvse were first observed on the nth May, and at that 



time they were thin and of a dark reddish-brown colour, and measured 



about half an inch in length. At this date the tips of the infested plants 



were bent downwards, and looked as if they had been injured by frost. 



In every instance the larva was found about 6 or 8 inches belovv the 



bend, having eaten its way down inside the stem. About the middle of 



June larvpe were found much further down the stem, about 3 or 4 inches 



from the ground, and soon after this date they reach the main root of the 

 plant, where the larv?e feed until maturity. When mature the larva leaves 

 its burrow and enters the previous year's stem, where it changes to a 

 pupa. By the 27th July the larvte under observation were full-grown, 

 and shortly afterwards pupated. Pupse were found from about the end of 

 July, all through August, and in every case the pupae were found inside 

 the old stem of the plant." 



In my rearing operations I had the larvse in their roots singly in jelly 

 tumblers, and in every case they pupated in their burrows, without leaving 

 them or looking for any other refuge, but possibly this was because there 

 was no other place where they could go. 



Mr. Norris has examined many plants, but has never found any early 

 drooping of the plant, but has seen this later in the season when the larva 

 had been boring some time in the root. 



In the White Mountains it was the drooping of the top of the plant 

 which attracted my attention, but that was at the beginning of August, and 

 the larvaj were mature. 



Mr. Winn failed in 1903 and 1904 to find any young larvae of this 

 species in the Meadow Rue plants examined early in June, but this year, 

 on the 1 8th June, he found four larvae about 5-8 inch long in the roots, 

 and also several of larger size in the stems. 



Mr. Winn informs me that since his attention was directed to this 

 species he has not found an old Meadow Rue plant at Montreal, Bidde- 

 ford, Me., or among the Laurentian Mountains that was not tenanted by 

 one of these larvae, and is of the opinion that the insect is of benefit to the 

 plant in ridding it of excess of root-stock. 



In 1903 Mr. Herbert Brainerd sent from Brown&burg, Q., to his 

 brother, Mr. Dwight Brainerd, in Montreal, a number of larvee which he 



