302 Forty-second Report on the State Museum, [160] 



Unrecognized Apple-Tree Attack. (Country Gentleman, for April 

 26, 1888, liii, p. 329, c. 2,-17 cm.) 



The injury to limbs of an apple tree, received from Mercer Co., N. J., 

 can not be referred to any known insect. The first year's attack shows 

 a small hole surrounded by blackened and dying bark, leading to an 

 elongate empty egg-shell within the bark in a cyst-like cavity. No larval 

 channel therefrom into the bark or wood is present. The second year 

 after attack shows an unsightly scar of an inch or more in diameter, 

 from which all the sap-wood is removed, with a new growth impinging 

 on its border. The old bark is either removed from the dead wood 

 beneath, or still held as a dried and depressed film over it. [Was subse- 

 quently referred to the oviposition of one of the flower-crickets.] 



The White Flower-Cricket. (Country Gentleman, for April 26, 1888, 

 liii, p. 329, c. 2-3 — 12 cm.) 



Egg punctures in a Concord grapevine of a size as if made by a pin, 

 arranged closely together in continuous, almost straight lines of two or 

 three inches in length, are identified as those of (Ecanthus niveus (Serv.). 

 These punctures may kill the vines beyond them or cause them to die 

 and break off. The insect does not feed upon any of the numerous 

 plants in which it oviposits, but is carnivorous in its early life, eating 

 plant-lice, etc. 



The Leaf Hopper. (The Vineyardist, May 1, 1888, v. ii, p. 113, c. 1-3 — 

 81 cm.) 



Kemarks on the comparative injury caused by Erytlironexira vitis on 

 different varieties of grapes ; its habits and nature of its injuries, descrip- 

 tion, and transformations; not a "Thrips," and what the Thrips is. 

 The best remedy for it in graperies is vaporization of tobacco juice; 

 how it is done in France. For destroying it in vineyards, spray the larvae 

 with tobacco water or soap-suds, or kerosene emulsion. Driving the 

 winged insect on strips of tarred building-paper, stretched and carried 

 between the rows of vines, has proved efficient. 



To Kill Plant-lice. (Farm and Home, for May 1, 1888, ix, p. 158, c. 4.) 



Plant-lice on apple trees are not difficult to kill, if attacked at the right 

 time, with the proper apparatus and in the right manner. The proper 

 time is early in the spring when they are hatching and before they are 

 protected by the curling leaves, or when they are in the egg in the 

 autumn, by spraying with a kerosene emulsion. The needed apparatus 

 is a good force-pump and nozzle — the best of these are named. The 

 right manner of applying the insecticide is to make it reach every 

 insect ; benefits of fine spraying stated. 



[Kevised, and printed in this Eeport, pp. 160-162.] 



The Bacon-beetle attacks Comb. (The Bee Keepers' Magazine, May 

 1888, xvi, pp. 143, 144—62 cm.) 



A beetle sent for name, the larvae of which had attacked some empty 

 honey-comb and riddled the wax, is Dermestes lardarius Linn. Its habits 

 are given, together with those|of some allied species, and the larva and 



