ENTOMOLOGY. IGT 



in the Canton of Vaud and a brief report is given of tlie action of tlie Canton Council 

 of State at Lausanne in reconnnending the extensive use of American vines. 



A ne^w remedy for phylloxera, J. Dufour (Chron. Ayr. Canton Vaud, 13 {1900), 

 No. 2, ]jp. 29-34). — Soot has recently been proposed as a new remedy for this insect. 

 The author calls attention t(3 the fact that many previous experiments have 1>een 

 made with this substance without success. 



Phytoptus vitis {Afjr. Jour. Cape Good Hope, 16 {1900), No. 2, p. 103). — It is 

 recommended that in infested vineyards all dry leaves and rough bark be burned at 

 the end of the season. 



A peculiar organ -which, occurs in Poecilocerus socotranus, H. A. Kr.\u.ss 

 [ZooJ. Anz., 23 {1900), No. 610, jjp. 155-167, fig. 4-) — The author has discovered an 

 organ in the pronotum of this grasshopper which seems to have a phosphorescent 

 function, or at least to l)e analogous to phosphorescent organs of other insects. 



The gypsy moth (Porthetria dispar), S. Lampa {Ent. Tidsh:, 21 {1900), No. 1, 

 pp. 34-46, i>l. 1). — Descriptions are given of the eggs, larvte, jjup*, and adult males 

 and females of this species, together with notes on its habits and life history. Brief 

 reference is made to the work which was carried out in the southeastern part of 

 Sweden in fighting the gypsy moth. The government appropriated $2,800 for this 

 purpose. A brief note is also given on the natural enemies of the gypsy moth. 



On the molt of pupee in Pterophorus, T. A. Chapman {Entomologist, 33 {1900), 

 No. 442, pp. 82-85). — The author made observations especially on the pupation of 

 P. galactodactylus. The species pupates beneath a leaf. The molt took place in 3 

 observed examples about 1 o'clock p. m., after 2 days of quiescence. The larvae 

 holds on to the leaf by the anal prolegs only. Molting takes place rapidl}- and is 

 accomplished in about 15 minutes. 



Depredations of the cottony maple scale, C. E. Brown {Bui. Wisco^isin Nat. 

 Ifi-t. Soc, n. scr., 1 (1900), No. 1, }ip. 05-67). — Pulvinaria innumerahilis occurred in 

 unusual numbers in Wisconsin notwithstanding the severity of the previous winter. 

 In ^Milwaukee the trees were subsequently attacked by the tussock moth. 



The pear and cherry tree slug, A. M. Lea {Agr. Gaz. Tasmania, 7 {1900), No. 

 8, p. 176). — Brief notes on the haliits, life history, and means of combating Selandria 

 cenm. 



The deposition of the eggs of Tortrix ambiguella, J. Perraud {Prog. Agr. el 

 Tit. {Ed. L'Est) , 21 {1900), No. 3, jip. 80-83).— The female lays about 4 or 5 eggs on 

 each grajie. 



The action of environment on the development of Tortrix ambiguella, J. 

 Perraud {Frog. Agr. et Vit., 17 {1900), No. 13, i^p. 391-393).— The author discusses 

 the influence of climatic and other conditions upon the observed alternation of 

 periods of relative abundance and scarcity of this insect. With the present knowl- 

 edge of the proljlem, it seems to be impossible to indicate accurately the determining 

 factoi's of the variation in numljers. 



The spiny elm caterpillar, C. M. Weed {New Ilarnpshire Sta. Bui. 67, pp. 123- 

 141, figs. 13). — A popular account of the habits, life history, and natural enemies of 

 Vanessa antiopa, with brief notes on remedies to be applied against this insect. The 

 species is said to have been unusually abundant on elm trees during the past 3 years 

 in New IIami)shire. It is believed to l)e single-brooded in the State. 



Spraying tall trees, P. MacMahon {Queensland Agr. Jour., 6 {1900), No. 2, pp. 

 lis, 119, pd. 1). — The author gives brief notes on kerosene emulsion, resin wash, 

 London purple, Bordeaux mixture, and Eau celeste. Experiments Avere made in 

 spraying tall trees which were infested with Ceroplastes rubra. An upright post was 

 securely fixed in the spray wagon, and to this post a long bamljoo rod which sup- 

 ported the hose was so attached that it could be i-eadily directed toward the desired 

 part of the tree. 



