KNTOMOLOGY. 981 



iuiiuIhts, especially in the C'luiutiui((iui grui)e ilistrict iu 1!)()1 and 11102. Tlu- jKst is 

 a native Anicri<:'aii speeies and is widely distril)uted thron<jli<iut liie coiiutiy. In 

 Chautauqua County, N. Y., it occurred in hir^'est numbers in parts of vineyards near 

 woods or otlier locations snital)le for hil)ernation. 



Tlu' insect is descril)e<l in its different sta^res and notes are j^ivenon its life history. 

 Its food j)lants include all varieties of grapes, especially the Clinton, Delaware, and 

 Concord, together with the Virginia creeper. The life history of the insect was 

 worked over in detail. It was found that the eggs are usually laid singly on the 

 under side of the leaves. The young nynii)hs i-emain in the same situation, where 

 they suck the juices of the leaves. According to the author there is but one whole 

 brood and a partial second brood in New York per year. The adult leaf hoppers 

 seek a location for hibernating about October 1. 



It is supposed that this pest is kejit in check to some extent by unfavorable weather 

 conditions. There are only a few natural enemies which prey upon the leaf hopper. 

 In experiments with artilicial remedies the auth(jr cooperated with J. Craig. A 

 series of experiments with sticky shields was carried out, during which a practical 

 form of shield was finally devisetl. The l)est time to use sticky shields is late in 

 May or early in June, and the best sticky substance, according to the author's experi- 

 ments, is a mixture of melted resin in the proportion of 1 (jt. to 1 pt. of castor oil. 



Spraying experiments showed that the adults could be killed by a mechanical 

 mixture of kerosene and water, containing from 15 to 25 per cent of the oil, while 

 the nymphs were destroyed by spraying with kerosene emulsion, tobacco decoction, 

 or whale-oil soap. Trap lanterns were found to be useless. Considerable benefit 

 may accrue, however, from burning grass or other rubbish under which the hojipers 

 may hibei'nate. The author's general recommendations for cond)ating this insect 

 include the burning of grass, \vee«ls, and leaves in the neighborhood of vineyards, 

 late fall or early spring plowing for the purpose of burying hil)ernating leaf hoj)pers, 

 the use of sticky shields early in June, and spraying with a 20 to 25 i^ev cent mechan- 

 ical mixture of kerosene and water, or with whale-oil soap at the rate of 1 lb. to 10 

 gal. of water. 



Patholog-ical and physiological observations on coffee, A. Zimmkkmann 

 {}h'dc(J. '>S' Lands Plantenluin, 1904, A'o. 67, pp. 105, ph. 4, f^O^- 54). — In this report 

 a number of diseases and physiological conditions of coffee and other plants are 

 discussed. 



Considerable attention is given to an account of a red pith disease caused ])\ the 

 attacks of Pentatomd pleheja. This insect attacks the leaves and other parts of vari- 

 ous varieties of coffee as well as other i)Iants. The method of making punctures in 

 tiie plant tissues was carefully studied with the result that the lesions caused by 

 these punctures are described in detail. The cell structures of the plants die in the 

 immediate neighborhood of the puncture and lead to the formation of red spots in 

 the leaves and pith. The common name of the disease is derived from this fact. 



A general account is given of the fungi which occur in and on coffee plants with 

 brief notes on their importance and means of combating them. The more important 

 species mentioneil in the account are Ifeniilcla va.'ftatrix, GUrosporium coffeamim, Cer- 

 ajspord coffelcola, etc. Under certain conditions. the flowers of the coffee plant fail 

 to develop normally. These conditions were investigated by the author and notes 

 are given on the causes and means of preventing this trouble. An account is also 

 presented of the variations iu form of the fruit of Coffea liberiat. The author also 

 discu&ses briefly the injuries done to Erythrina lithospenva by nematode worms, and 

 the eradication of Lccaninm viride by various insecticides, such as mixtures of soap, 

 lime, tol)acco, copper sulphate, kerosene, corrosive sublimate, etc. 



The "mosquito blight" of tea, II, H. II. ]\I.\nn {Oilcidtd: Indian Tea Ahsoc, 

 1004, pp. ..'0, jilx. <v). — This pamphlet contains a report of the continuation of the 



;}0!»72— No. 10—04 4 



