687 



During October 1914 sexual forms predominated and in the first half 

 of November oviposition was in progress. MyzocaUis jyasaniae, sp. n., 

 occurs on the under side of the leaves of Pasania densiflora, Oerst., 

 (tan-bark oak). Winged, viviparous females were taken on 12th 

 June 1914, 6th November 1914 and llth February 1914. The winter- 

 eggs of Macrosiphiim heucherae, Thomas, have been found on the 

 flower-stalks of Heuchera harfwegii, Dougl. ; they were being deposited 

 on 25th May. 



Lkonard (M. D.). The immature Stages of the Black Apple Leaf- 

 Hopper {Idiocerus prorancJieri. van Duzee).- ,Jl. Econ. Entom., 

 Concord, viii, no. 4, August 1915, pp. 415-419, 1 plate. 



The nymphs of Idiocerus provancheri, van Duzee, (black apple-leaf 

 hopper) have occurred during spring and early summer on the leaves 

 of apple at Ithaca and on apple twigs at Cornell University during 

 March and April. Nymphs have been also found on quince and pear. 

 The winter is passed in the egg-stage. The nymphs feed chiefly on 

 the under side of the leaves and, when disturbed, move rapidly over 

 the leaves and stem. Hatching of the nymphs apparently begins at 

 about the time the blossom clusters appear. At Rochester Junction, 

 a number of nymphs in the 3rd instar were observed on 4th June 1914 ; 

 on 10th June an adult was taken from the same tree. According to 

 Crosby, the eggs are inserted into the bark of the fruit spurs about 

 J inch from the base of the buds. They were observed by him at 

 Stuyvesant Falls, N.Y., on 29th April. Other records of this species 

 are from Montreal, Winnipeg, Hamilton and Buffalo, and it is said to 

 occur as far west as Iowa. 



Scientific Notes. — Jl. Econ. Entom., Concord, viii, no. 4, August 1915. 

 pp. 429-431. 



Ahhrnna argillacea, Hb., (cotton moth) was observed in Kent, 

 Ohio, on 23rd September 1914, following several days of warm weather 

 with a strong south wind. During April 1915 a number of reports 

 of injury to radishes by CeitthorrhyncJms ra]3ae,Gy\., (cabbage curculio) 

 were received from Kansas. In many cases early radishes were com- 

 pletely destroyed. In eastern Kansas early radishes were injured by 

 Phyllotreta vittaia, F., (striped turnip flea-beetle) and P. pusilla, Horn, 

 (western cabbage flea-beetle). The work of both species was confined 

 chiefly to the succulent stem just at the surface of tlie ground, causing 

 the leaves to wither. Where the plants were an inch or more in height, 

 the leaves were attacked. 



Pomphopoea aenea (blister beetle) was obtained from the flowers 

 of plum in Brown County, Indiana, on 8th April 1915. Serious damage 

 was caused by the adults, which consumed all parts of the flower. 

 A spray consisting of 5 lb. lead arsenate and 1 pt. Black Leaf 40 in 

 50 U.S. gals, water was efficient in controlling the infestation. 



Cook (A. J.). The Citricola or Citrus Gray Scale.— Mlhly. Bidl. State 

 Commiss. Hortic, Sacramento, CaL, iv, no. 8, August 1915, 

 pp. 373-374. 

 The secretion of Coccus citricola (citrus grey scale) attracts black 



smut fungus which causes injury to the foliage and fruit of the plants 



