221 



the value of various commercial insecticides and fungicides, and 

 experiments have been made to determine the action of potassium 

 cyanide and other substances in the control of insect and plant diseases 

 when injected into the tissues of plants. 



DiCKERSON (E. L.) & Weiss (H. B.). The Azalea Lace-bug, Stepha- 

 nitis pi/rioides, Scott. (Tingitidae, Hemiptera). — Entom. Navs, 

 Philadelphia, xx\'iii, no. 3, March 1917, pp. 101-105, 1 plate. 

 This insect has been foimd in many localities in New Jersey, on 

 various species of azalea, having evidently been introduced on ever- 

 green azaleas from Japan. The nymphs and adults feed on the under- 

 surfaces of the leaves, producing discoloration and frequently causing 

 the leaves to drop. The winter is passed in the egg-stage, the first 

 larvae hatching about the end of May. There are three broods in 

 southern New Jersey, and only two in the central and northern parts 

 of the State. All stages can be foimd together at the same time. 

 The bugs may be controlled by spraying the imderside of the leaves 

 with whale-oil soap at the rate of 5 or 6 pounds to 50 gals, water ; this 

 should be applied shortly after the eggs of the first brood have hatched. 



Sandees (G. E.). The Entomological Branch. Some Results of 

 Spraying. Experiments in Nova Scotia in i91Q.—Agric. Gaz. 

 Canada, Ottawa, iv, no. 2, February 1917, p. 114, 



The matter in this article has been abstracted from another source 

 [see this Revieiv, Ser. A, v, p. 176]. 



Wilcox (A. M.). Notes on Rearing Insects for Experimental Purposes 

 and Life-history work. — Psyche, Boston, xxiv, no. 1, February 

 1917, pp. 7-12, 2 plates. 



In the rearing of insects for experimental work, provision should be 

 made for an abundance of normal food, and for a suitable environment 

 for the various stages ; temperature and humidity must be regulated 

 and disease and parasitism by other insects prevented. The apparatus 

 used for this purpose, especially for rearing Lepidoptera, is described 

 in detail. 



For rearing fruit-flies of the genus Drosophila, test-tubes have been 

 found very successful. The larvae were fed on banana-agar made by 

 crushing four ripe bananas and allowing them to infuse in 500 c.c. 

 of distilled water. The liquid is then strained off and 7| grams of 

 powered agar added and the whole cooked until the agar is dissolved. 

 The flies \\in readily oviposit in this medium and many generations 

 a year may be raised. A piece of filter paper is placed in the tubes 

 for the maggots to pupate upon. The banana-agar is nearly trans- 

 parent, which enables the feeding habits, etc., of the larvae to be noted. 



Childs (L.). Further Observations on the Control of the Fruit-tree 

 Leaf-roller in the Hood River Valley. — Rept. Hood River Branch 

 Expt. Sta.for 1916, Oregon Agric. Coll. Expt. Sta., Corvallis, Sta. 

 Bull. 141, February 1917, pp. 17-27, 2 tables. 



The experimental work described in this article, which deals with 

 the control of the fruit-tree leaf-roller {Cacoecia argyrospila), is based 



