84 BULLETIN NO. 4, DIVISION OF ENTOMOLOGY. 



The Apple Tree Plant-louse. 



Could you make it convenient to tell me the name of the inclosed 

 Aphides? This is fruit year for the apples of Monmouth County, New 

 Jersey, and the trees are almost black on the flower buds with these 

 lice. The farmers are filled with apprehensions. Last night was a 

 black frost, and it bids fair to be so to-night. But I find that, though 

 numb on the trees to-day, they became quite lively when brought into 

 the house. What do you think about them 1 Is it usual so early ? Any 

 information will be gratefully received. 



P. S. — Just after making up the package my son brought me some buds 

 of Bartlett pears similarly attacked. I opened the package and put them 

 in. They are inclosed in tinfoil, thus separating them from the others. — 

 [Samuel Lockwood, Freehold, N. J., April 25, 1883. 



[The louse was the common Aphis mail, and it is not at all unusual to 

 find them in such numbers thus early in the season. As a remedy we 

 advised trying a very dilute kerosene emulsion, as described in our last 

 Eeport for 1881-2, pages 112-11G.J 



Oak Bark-lice. 



With this note I send you portions of an oak twig (Quercus aquatica) 

 which are incrusted with scales or galls, or whatever you may term 

 them. The branch looks barnacled. 



I do not remember ever having seen them before, ^he oak from 

 which they came is growing on the roadside, and is about 15 feet high. 

 The twig or young branch seems to have beeu twisted by some driver 

 who wanted a switch, but who did not succeed in wringing it off. It 

 is (as you will see from the young leaves) still growing, and upon 

 this twig only were found the insect scales. Nowhere else on the tree 

 are they to be seen — only on this hanging and twisted branch. — [J. H. 

 Mellichamp, Bluffton, 8. C, April 23, 1883. 



[The bark-lice belonged to an undescribed species of the true genus 

 Lecanium. The fact that they were found on the broken twig is of great 

 interest, as bearing on the preference which all bark-lice seem to have 

 for enfeebled trees and portions of trees .] 



Cattle Tick on Human Body. 



This tick was removed by a friend of mine — a physician — from the 

 border of the arm-pit of a young lady. The tick had penetrated so 

 deeply that it was removed with some difficulty without breaking it in 



