596 EXPERIMENT STATION RECORD. 



Other iijiplications may be inado at intervals of from 14 to 20 days. As an insecticide 

 Kedzie'.s formula foraryenite of lime is recommended. 



The peach-tree borer, C. L. Maklatt ( f7. S. Dept. A<jr.,Dmsion of Entomoloyij Clrc. 

 54, ]>)>. 0,fi<j. 1). — A revii^ed form of Circular No. 17. 



The depredations of Retinia turionana, tog-ether with notes on the life 

 habits of members of this genus, J. Rit/k.ma Bos {Centhl. Bukl. n. Par., ii. Abt., JO 

 [lUOS), No. S, ]>p. i.'41-J')0, Ji(j>^. 2). — Economic and ])iological notes are presented on 

 Relima resinella, Ii. duplana, Ii. huoliaiui, and 7t. turionana. The last-named species is 

 very injurious to pines in Holland and elsewhere in Europe and notes are given on 

 its injurious effects, manifested in the malformations of growing twigs of jjines. 



In controlling this species in the nursery or in young trees the author recommends 

 that the larvte be crushed in the infested buds, and that badly infested trees be 

 removed. It is desirable that deciduous trees be planted around areas of conifers. 



A study of insect metamorphosis, C. Perez {Bui. Sci. France et Belg., 37 {1903) , 

 pp. 195-4^7, ph. 3, figs. 32). — The author made an elaborate study of the metamor- 

 phosis of Formica rufa. Notes are given on various details of gross and microscopic 

 anatomy as observed during the different developmental stages of this insect. The 

 literature of the subject is critically discussed in connection with a bibliography. 



The cocooning- habit of spiders, T. H. Scheffer {Lulustriali^l, 30 {1903), No. 6, 

 pp. S8-93). — Notes are given on the habits and life history of various species of 

 spiders with special reference to the purpose and method of constructing cocoons. 

 Several species of spiders were studied, including Araneus trifolium, Argiope auran- 

 tia, etc. 



Millipedes and centipedes {Bd. Agr. and Fisheries \_London], Leaflet 94, pp. 4, 

 tigs. 3) .—Notes are given on the habits and life history of these animals and on the 

 means of combating them. Since they are usually distributed in leaf mold and 

 similar substances, it is recommended that such material be mixed with lime or that 

 infested soil be treated with bisulphid of carbon. 



The Trichodectidse, M. Morse {Amer. Nat., 37 {1903), No. 441, pp. 609-624, figs. 

 18) . — Notes are given on the feeding habits of the genus Trichodectes and a key is 

 presented to assist in the identification of the 18 species which are recognized as 

 occurring in North. America. A brief list of literature relating to this genus is also 

 presented. Detailed descriptive notes are given for each of the species. 



The Diplopoda, P. Silvestri {Classis Dijjlopoda. Portici: E. Delia Torre, 1903, 

 vol. 1, ]ip. 272, pis. 4, figs- 346). — In this first volume of the author's account of the 

 Diplopoda the anatomical structure of species of this group is described in detail, 

 and the most important features are illustrated. Especial attention is given to the 

 anatomy of the integument, muscles, and body segments. 



Certain new cercomonadines, little-known parasites in the intestines of 

 insects, L. Leger {Arch. Proiistcnkunde, 2 {1903), No. 1, pp. 180-189, figs. 4)-— 

 Notes are given on a number of protozoan organisms parasitic in' the intestines of 

 common insects, such as the house fly and species of Tabanus, etc. The parasitic 

 organisms include iiZer/>eto?«ona.s musac, II. gracilis, H. lesnei, and species of Crithidia. 



The monthly bulletin of the Division of Zoology, H. A. Surface {Pennsyl- 

 vania State Dept. Agr., Mo. Bui. Dlv. Zool, 1 {1903), No. 4, pp. 32, X)h. 2). — Brief 

 notes on plant diseases and insect pests of the month of August, carpet beetle, grain 

 weevil, game birds, and weeds. 



Report of the economic zoologist, B. F. MacCartney {Pennsylvaida Slate Dept. 

 Agr. lipt. 1902, jjt. 1, pp. 171-178). — A brief account is presented of the nursery 

 inspection in connection with a list of the nurserymen of Pennsylvania. 



Canadian law relative to imports of nursery stock, F. S. S. Johnson ( U. S. 

 Considar Rpts., 73 {1903), No. 279, pp. 637-639) .—The attention of nurserymen is 

 called to the inspection law of Canada relative to trees, plants, cuttings, buds, etc., 

 liable to infestation by San Jose scale. Such shipments will be fumigated by the 



