184 



feeding for a few days. Oviposition begins from 7 to 10 days after 

 emergence. In captivity adults have fed on acorns, sweet potatoes 

 and various fruits, but normally only tamarind seeds are attacked. 

 No parasites of this weevil have been reared. Under laboratory 

 conditions the lafvae and pupae are attacked by the predaceous mite,. 

 Pcdiculoidesventricosus, Newp., but under field conditions it is doubtful 

 whether it would be able to penetrate to the larval burrows. 



Agee (H. p.) &l Swezey (O. H.). Directors' Report.— Proc. 39ih 

 Ann. Meeting Hawaiian Su^ar Planters' Assoc, Honolulu, 8th 

 December 1918; 1920, pp. 142-185. 



This report has already been noticed elsewhere [R.A.E., A, 

 viii, 72]. 



Herrick (G. W.). Insects of Economic Importance. — New York, 

 The Macmillan Co., 1920, 172 pp. [Pi'ice .■i;1.75.] 



This book may be regarded as an introduction to the study of 

 economic entomology. The usual methods of control are enumerated, 

 the insecticides and their application being dealt with in some detail. 

 A short account is given of the more important of the insects them- 

 selves, classified under the crops they attack in order of their import- 

 ance, with notes on the measures applicable in each case. A con- 

 siderable amount of useful information is given in a condensed form, 

 but in the majority of cases the species could hardly be identified 

 from the short description given, if they were not alread}' well known. 

 The insects selected are those of importance in New York State, and, 

 where they are widely distributed, it is the life-history as it occurs 

 in that State that is described. 



Collins (S. H.). Chemical Fertilizers and Parasiticides. — London, 

 Bailliere, Tindall & Cox, 1920, xii + 273 pp., 8 figs. [Price 

 10s. 6d. net] 



This book is divided into six parts, dealing with separate branches 

 of the subject, the last of which is devoted to chemical insecticides 

 and fungicides. Of inorganic poisons the principal insecticides con- 

 sidered are lead arsenate, lime-sulphur and potassium sulphide ; 

 and of organic poisons, carbon bisvilphide, hydrocyanic acid, petroleum 

 emulsions, soap, creosote, naphthaline, tobacco, pyrethrum and helle- 

 bore. In all cases almost the whole of the information given concerns 

 sources and modes of manufacture, but is very convenient for reference 

 from the chemical standpoint. Useful lists of other works dealing 

 with the subject are appended. 



MiSRA (C. S.). "The American Blight" or "The Woolly Aphis," 



Eriosoma [Schizoneura) lanigera, Hausmann. — Agric. Jl. India, 

 Calcutta, XV, no. 6, November 1920, pp. 627-635, 5 plates. 

 [Received 12th February 1921.] 



In view of the probable extension of fruit-growing in the Himalayas, 

 the attention of would-be growers is drawn to Eriosoma lanigerum 

 and the injury done by it. This Aphid was first noticed in India 

 in 1889, when nearly every orchard in Coonoor, South India, was said 

 to be destroyed by it. It is now an established pest in various parts 



