822 Forty-second Report on the State Museum. [180] 



spiders. It spins webs on the under side of the leaves for shelter, while 

 sucking the juices of the various plants upon which it occurs; those 

 upon which it was noticed at Utica are mentioned. It has this sum- 

 mer been discovered in an injurious attack on a quince orchard near 

 Geneva, N. Y. Kerosene emulsion, soap solution with sulphur mixed, 

 and quassia infusion may be used for killing it. It was the cause of 

 the yellow discoloring of the leaves of a nasturtium in the garden of 

 the writer. 



[Printed, also, in this Report, see pp. 287-289.] 

 The Thirteen-year Cicada. (The Argus [Albany], for October 11, 

 1885, p. 4— 32 cm.) 



A paper read before the Albany Institute, containing remarks upon 

 the exceptional long life-period of the Cicada septendecim; the number 

 of broods occurring in the United States and in the State of New York ; 

 notice of a thirteen-year brood, and that its occurrence only in the 

 Southern States may be the result of hastened development through 

 higher temperature ; Professor Riley's experiments in transferring the 

 two forms from one region to another ; and record of the planting of 

 the eggs of a thirteen-year brood at Kenwood, near Albany. 



[Printed, also, in this Report, see pp. 276-278.] 



The Elm Leaf Beetle. (Country Gentleman, for October 15, 1885, 1, 

 p. 841, c. 3-4 — 23 cm.) 



The inquirer, from Bordentown, N. J., of methods for killing the 

 insects destroying the foliage of his elm trees, is referred to a notice of 

 the insect, Galeruca ocanthomelcena, in the Country Gentleman for October 

 12, 1882 (p. 805), and to Bulletin No. 6 of the Division of Entomology of 

 the U. S. Agricultural Department. Of the arsenical insecticides recom- 

 mended, London purple is preferred, in the proportion of one-half 

 pound to three quarts of flour and a barrel (forty gallons) of water. 

 Directions for mixing are given, and the advantages of its use stated. 



The Clubbed Tortoise-beetle. (Country Gentleman, for October 15, 

 1885, 1, p. 841, c. 4 — 12 cm.) 



Remarks upon Coptocycla clavata (Fabr.), its appearance, habits and 

 food-plants. Reference to its occurrence on the potato, tomato, and 

 egg-plant. 



A Leaf-mining Insect. (Home Farm [Augusta, Me.], for October 15, 

 1885, p. 1, c. 6 — 20 cm.) 



A leaf-miner reported in Maine, and in the vicinity of Boston, Mass., 

 is identified as one of the Anthomyians, and probably Chortoyhila 

 betarum Lintn., which is known to have distribution in New York and 

 Connecticut. The approved methods for meeting its attack, are pre- 

 vention of egg-deposit by the use of counterodorants, and burning the 

 infested leaves. 



