272 EXPEKIMENT STATION KECOKD. 



making insecticides and fungicides, and a brief account of some of the more common 

 fungus and insect enemies of fruit trees. 



Insects injurious to forest trees, E. P. Felt {Rpt. New York Com. Fisheries, 

 Game, and Forests, 1898, pp. 31, ])ls. 3, figs. 11). — The author gives a brief general 

 account of the habits and metamorphoses of insects. Special consideration is given 

 to the forest tent caterpillar, the leopard moth, Sesia acerni, Plagionoius speciosus, 

 Elaphidion villosum, and Pulvinaria innumerabilis. In connection with each one of 

 these insects, the author discusses its life history, food plants, natural enemies, and 

 the appi'oved remedies for combating it. 



The significance of the terms phagocytosis and lyocytosis, J. Anglas 

 {Compt. Rend. Soc. Biol. Paris, 52 {1900), No. 9, pp. 219-221).~li\ a study of the 

 metamorphosis of Hymenoptera, especially of the genera Vespa and Apis, the author 

 states that the disappearance of the larval organs or of the larval reserve food mate- 

 rials does not take place by phagocytosis, but that the process is better described as 

 a chemical degeneration and dissolution produced by the extracellular digestive 

 action of leucocytes and of other cells. This process is called lyocytosis by the 

 author. 



Bot flies, gadflies, and breeze flies, J. G. O. Teppee {Jour. Agr. and Ind. South 

 Australia, 8 {1900), No. 7, pp. 564-566). — Notes on the life history and habits of spe- 

 cies of Talsanus, Oestrus, Hypoderma, and Gastrophilus. 



The food of certain caterpillars of the Bombycidae, L. Demaison {Bui. Soc. 

 Ent. France, 1900, No. 2, pp. 22, 23). — Notes on the feeding habits of Bomhyx quer- 

 ciis, Megasoma repandum, Orgyia antiqua, etc. 



Combating Anthonomus pomorum {Hcssische Landic. Ztschr., 70 {1900), No: 11, 

 p. 142). — Experiments were tried in scraping the loose bark from 12 apple trees and 

 painting on a band of axle grease. The bands were painted on the trees on January 

 17 and were inspected 14 times between that date and May 10. In all, 625 beetles 

 were caught, with an average of 52 to the tree. It was observed that the insect was 

 most plentiful in the period from the end of March to the end of April. 



A contribution to the life history of Cartharia pyrenaealis, T. A. Chapman 

 {Ent. Mu. Mag., 36 {1900), No. 431, pp. 75-78). 



A new gall gnat of the grapevine ( Clinodiplosis vitis), G. LtJSTXER {Ent. 

 Nachr., 26 {1900), No. 6, pp. 81-84, pi- 1) ■ — The insect appears to be double brooded, 

 the larvse of the first generation being found in June and July and those of the sec- 

 ond generation in August and September. The larvae are found on the under side 

 of the leaves and in the berries during the summer, and half-grown individuals 

 were found in winter among the hairs of the leaf buds. Adults were seen from the 

 beginning of September until November. Brief descriptions are given of the insect 

 in its vari(jus stages. The eggs were found on brown spots of the leaves. 



Galls on the leaves of Jambosa domestica, L. Zehntner {Indische Natuur, 1 

 {1900), No. 1, pp. 3-11, figs. 3). — The author describes the appearance and structure 

 of galls produced chiefly on the under side of the leav^es of this tree by an insect 

 belonging to the Psyllidte. The insect is described and figured in its various stages. 

 As reme<lies, the author suggests the removal and destruction of infested leaves. 



Lasius fuliginosus and its habits of rearing fungi, G. Lagerheim {Ent. 

 Tidskr., 21 {1.900), No. l,pp. 17-29, figs. 7).— The author made a detailed study upon 

 the nature of a fungus found in the burrows of this species of ant. The fungus 

 should ai)parently be referred to Cladotrichum microsporum. According to the 

 author's observations, the fungus may be of only slight importance as a source of 

 nutriment for the ants, but its luxuriant growth through all the chambers of the ant 

 colony may assist in preventing the crumbling of the walls of these burrows. 



The author believes that the presence of the fungus in the ant burrows is due to 

 the deliberate care which the ants bestow upon the fungus and not to the inability 

 of the ants to keep tlie f migus out. 



