18 THE CANADIAN ENTOMOLOGIST. 



I have many times found the latter coiled up in the potato he was eating, 

 but I have never seen the mark of teeth such as the mole possesses on a 

 potato. Nor do I believe the mole ever meddles with potatoes, or corn. 



Abundance of Certain Insects. — The Southern Cabbage Butterfly 

 (P. protodice) is exceedingly abundant here this summer. I have been 

 able to count scores on the wing at one time. 



The potato worm, or larva of vS. ^-inaculata^ is troublesome on the late 

 potatoes this month (Septenaber) and soon strips a plant of its leaves. 

 However, he is easily dealt with, as he is at once betrayed by the castings on 

 the ground, and a little " poison-dust,' such as I use for the beetle, soon 

 makes an end of him. I have tried " Buhach " on this insect, but find 

 the former much easier of application and more effective. The latter 

 diluted with ten parts of flour had little effect on the worms, but when 

 used neat it stopped their feeding and killed two of them in a couple of 

 days. But there is the trouble of looking up the creature (green on a 

 green ground) in order to put the powder " where it will do the most 

 good," whereas one need only shake the powder-tin over the plant and 

 pass on, leaving the worm to poison itself. 



The same is true of the Cabbage Butterfly (P. rupee) in the early 

 stages of growth of the cabbage. I have used Buhach, and a friend of 

 mine is now using it on a plot of 3,000 heads of cabbage, but the time 

 spent in finding the green worm on the green leaf is a serious drawback, 

 and while the plant is very young I prefer using the " poison dust." I 

 can sprinkle a whole bed while I am finding the worm on a dozen cabbage 

 heads in order " to put salt on his tail." The '' poison dust" to which I 

 refer is made by mixing one part of London Purple and sixty parts of 

 ashes and passing the mixture several times through a fine sieve. I may 

 add that I find this a very efficient remedy for the turnip fly. 



NEW MOTHS, CHIEFLY FROM ARIZONA. 



BY A. R. GROTE. 

 (Continued from Vol. xiii., p. 229.) 



Hadena idonea, n. s. 



^ ^ . This species is similar in size to verbascoides and cariosa ; it is 

 very like the latter only instead of reddish brown the color is of an 

 ochrey brown, rather pale, the stigmata concolorous, rather wide, ill- 



