652 EXPERIMENT STATION HECOBD. 



formula) was less destructive to the eggs, but the j'oung psyllas which hatched 

 for the mo-st part failed to reach the opeuing buds and these succumbed to 

 the action of the sediment which became attached to their bodies after leaving 

 the egg shells." 



The pear psylla and its control, F. H. Hall (New York State Sta. Bui. 387, 

 popular ed. (1914), pp. 3-10, pi. 1, figs. 4). — A popular edition of the above. 



Observations and experimental studies of the life cycle of the beet plant 

 louse (Aphis euonymi), A. Malaquin and A. Moiti^ (Compt. Rend. Acad. Set. 

 IParis], 158 {1914), No. 19, pp. 1371-1374)-— The authors find that the eggs of 

 A. euonymi deposited in the fall on the bean, an alternate host plant, have not 

 hatched notwithstanding that they hatched normally on Euonymus europeus, 

 the primary host plant, and that if the young which issue from eggs are experi- 

 mentally placed upon the leaves of the beet they do not attempt to feed thereon. 

 It is thought probable that in this migratory species the generation issuing 

 from the fecundated eggs is by heredity closely restricted to its primary host 

 plant, and that the adaptation to an alternate host plant becomes established 

 only in later generations. 



Catalog'ue of the Lepidoptera Phalsense in the British Museum. — XII 

 and XIII, Catalogue of the Noctuidse in the collection of the British Mu- 

 seum, G. F. Hampson (London, 1913, vols. 12, pp. XIII-\-626, pis. 30, figs. 134; 

 13, pp. XlV-\-609, ph. 18, figs. 130).— Volume 12 of this work (E. S. R., 28. p. 

 856) catalogues the uoctuid subfamily Catocalinse and volume 13 the remainder 

 of the Catocalinse and the subfamilies Mominse and Phytometrinae. 



The gipsy moth, J. Baksacq (Rev. Phytopath. Appl., 1 (1913), No. 5, pp. 

 70-73, figs. 2; ahs. in Rev. Appl. Ent., 1 (1913), Ser. A, No. 12, p. -^Si).— This 

 article describes the ravages of the gipsy moth in the Crimea. The young 

 caterpillars are frequently parasitized by Apantcles fulvipes, A. solitaritis, A. 

 glovicratus, Prisloiitcrus vulncrator, Echinomyia fera, Tachina larvarum, and 

 T. rustica; the more mature caterpillars and pupje by Sarcopltaga affinis, 8. 

 albieeps, Parcxorista lucorum, Pimpla imtigaior, Rwselia aniiqua, Scotia 

 saturniw, Thcronia flavicans, and others of less importance. 



The destruction of the leopard moth, P. Xokl (Bui. Lab. Regional Ent. Agr. 

 [Rouen^, No. 4 (1913), p. 14; ahs. in Rev. Appl. Ent., 1 (1913), Ser. A, No. 10, 

 pp. 396, 397). — Injury to the cork oaks of the Massif de I'Edough in the Depart- 

 ment of Constantine is said to be chiefly due to Zeuzcra pyrina, which bur- 

 rows in the trunk and branches. This pest is thought to be the same as 

 Z. wsvuli since the habits of the two are identical. 



Carbon bisulphid is said to have been used with success in Algeria against 

 the caterpillars of Z. pyrina, the liquid being injected into the gallery and the 

 opening stopped up with plaster or clay. 



The sequoia pitch moth, a menace to pine in western Montana, J. Brunneb 

 (U. 8. Dept. Ayr. Bui. Ill (1914), PP- ^i> fiff^- 5).— The sequoia pitch moth (Ves- 

 pannnia sequoia) menaces the lodgepole pine timber in the area near and at 

 the divide between the Swan River and the Clearwater River in western 

 Montana, and is at present the most destructive insect pest in that region. 

 Roughly the area in which the insect is a very serious factor in forest destruc- 

 tion is about 12 miles square, or more than 90,000 acres. 



Observations of the emergence of the adult show that the general llight of 

 the mature insects and oviposition occur between June 25 and July 15, the 

 greater number of them probably flying about July 10 and the flight and 

 oviposition being over by August 1. While the period required for the in- 

 cubation of the egg has not been determined, the injury to the newly infested 

 trees by the young larva? is quite perceptible by August 15 The larvae are 

 said to have attained considerable size by the time frost arrests their activity 



