318 



of apple scab and biting insects. The two most important insecticides, 

 calcium arsenate and lead arsenate, may safely be used with either 

 system. Dusting is, however, inferior as a remedy for sucking insects, 

 but improvements may be made in this respect during the next few 

 years. 



Severin (H. H. p.). The Life History oJ the Beet Leafhopper. A 

 Record from Studies of Eutcttix tenella conducted in the San 

 Joaquin Valley, California. — Facts abovtt Sugar, Neiv York, xiv, 

 nos. 5-9, 4th, 11th. 18th, 25th February, & 4th March, 1922: 

 pp. 92-93; 110-111 ; 130-131 ; 152-154, 158; & 170-171, 16 figs. 



The Hfe-history of Eutettix tenella (beet leaf-hopper) in California, 

 which is here recorded in detail, has previously been noticed from 

 another source [R.A.E., A, x, 135]. 



ScHiNDLER (A.). Organisation de la Lutte contre VI eery a purchasi 

 au Maroc en 1921. — Rev. Agric. Afr. Nord, Algiers, xx, no. 140, 

 7th April 1922, p. 226. 



Icerya purchasi was probably introduced into Morocco from Europe 

 in 1920 ; in July 1921 this Coccid developed to an alarming extent 

 in Rabat, and the Phytopathological Service telegraphed to the 

 Insectarium at Mentone for supplies of the Coccinellid, Novius 

 cardinalis, which were delivered six days later by air. These pupae 

 were reared in the laboratory, and adults and larvae were distributed 

 in the infested areas. Three months later, very few living individuals 

 of /. purchasi were visible, but the plantations were covered with 

 larvae of A^ cardinalis. Fresh infestations were discovered at Casa- 

 blanca, and it was necessary to send there for supplies of /. purchasi 

 on which to nourish the colonies of N. cardinalis. which are still being 

 maintained in case of fresh outbreaks of the Coccid occurring. 



PiERRET (E.) . Excursion aux Oseraies de la Maison Mercier a Kopstal. 



— Bull. Mens. Soc. Nat. Luxenibourgeois, Luxembourg, N.S., 

 15th Year, no. 31, 1921, pp. 107-114, 4 figs. 



In the course of this paper on the cultivation of willows and osiers 

 for industrial purposes, a chapter is devoted to the insect pests, which 

 include the Cerambycids, Aromia moschata, L., Lamia textor. L., 

 Gracilia minuta, F., and Oberea oculata, L. ; the Chrysomelids, 

 Phyllodecta iPhratora) vitellinae. L., P. vulgatissima. L., Melasoma 

 po'puli. L., and M. tremulae, F. ; and the moths, Aegeria {Sesia) 

 forrniciforniis, Esp., Stilpnotia (Leucoma) salicis, L., Phalera bucephala, 

 L., Earias chlorana. L., Eriogaster lanestris, L., and Argyresthia 

 pvgmaeella, Hb. The usual insecticides proved useless against these 

 pests, but their numbers are successfully kept down by pheasants, 

 which for this purpose proved better than fowls. 



HouLBERT (C). Les Coleopteres d'Europe, France et Regions voisines. 

 Anatomie g6n6rale ; Classification et Tableaux g^neriques illustres. 

 Vols, ii & iii. — Paris. Librairie Octave Doin, 1922, 340 pp., 

 30 plates, 99 figs ; 297 pp., 30 plates, 30 figs. [Price Fr. 12 

 per volume.] 



These two volumes, together with the one previously noticed 

 [R.A.E., A, ix, 326], complete the classification and description of 

 the 79 families, comprising 1,836 genera. The work, limited as it is 



