ENTOMOLOGY. 169 



elm in the vicinity of Montreal. The variety G. interrogationis umbrosa was abun- 

 dant at Port Hope in May and June and G. interrogationis fabricii was taken July 29 

 and as late as November 10, 189(5. Argynnis atlantis is noted as having extended its 

 range and is now found at Orillia. Colias ccesonia appeared suddenly in very con- 

 siderable numbers in several localities during the summer of 1896. 



Contributions to the biology and morphology of the Aphidae. I, On the 

 biology of some species of Aphides, A. Mordvilko (Horw Soc. Ent. Ross. [St. 

 Petersburg'], 31, pp. 253-313, ill. ; abs. in Zool. Centbl., 5 (1898), No. 7, pj>. 231-234).— 

 This work comprises a number of recent observations on the biology of several aphides 

 and forms a continuation of an earlier communication. The morphological peculi- 

 arities and the biological phenomena are considered in connection with surrounding 

 conditions of life. 



Germany's exclusion of American fruits, J. B. Smith (North American Review, 

 66 (1S9S), No. 4, pp. 460-465). — The reason for the exclusion of American fruits by 

 the German Government is explained as due to a misunderstanding of the nature and 

 means of dispersal possessed by the San Jose scale. 8o far as known, the insect has 

 never spread from fruit to tree. It can only crawl before it becomes fixed to its host 

 plant, but if infested fruit should be brought sufficiently close to a plant there is no 

 doubt that the scale could be spread in this way. 



The San Jose scale, L. R. Taft (Michigan Sta. lipt. 1898, pp. 124, 125). ^-Briefly 

 discusses the scale and its treatment, and notes the scales that may be mistaken for it. 



The black peach aphis, L. R. Tait (Michigan Sta. Rj>t. lS9G,pp. 125-127). — Numer- 

 ous complaints are noted. The insect was particularly injurious to young trees, and 

 was distributed by ants and other insects. Tobacco water, salt, nitrate of soda, 

 kerosene emulsion, bisulphid of carbon, and wood ashes are noted as remedies. 



The box-elder plant bug, L. < >. Howard ( U. S. Dept. Agr., Division of Entomology 

 Circ. 28, 2.8er., pp. 3, fig.l). — The general appearance, method of work, distribution, 

 habits, and remedies against Leptoeoris irivittatns are very briefly discussed. 



Mites injurious to plants, von Schlechtendal (Ztschr. Xatiirw. [Jena], 70(1898), 

 No. 3, pp. 328, 229). 



The pests and blights of the tea plant, G. Watt (Calcutta: Supt. Govt. Printing, 

 India, lS9S,pp. III-\-4G7-\-XVII, figs. 11). — A report of investigations made in Assam 

 and Kangra. The culture of the tea plant is discussed with special reference to 

 diseases and insect pests. 



The spruce gall louse, W. Brodie (Ontario Dept. Agr. Spec. Bui., Mag, 1S9S, pp. 

 2, pi. 1). — A popular circular on Chermes abietis. 



Report of the consulting entomologist, G. C. Davis (Michigan Sta. Rpf. 1890, pp. 

 135-138). — Lygus pratenais, mushroom insects ( Tyroglyph us phylloxera, Sciaria vu Igaris, 

 Aphodins granarius, and Ips fasciatus), little red cherry beetle (Adimonia cavicollis), 

 false chinch bug (Xyssius augustatus), grasshoppers, and the Hessian fly (Cecidomyia 

 destructor) are mentioned. Ten or more common varieties of wheat at the college 

 farm were severely injured by the last insect. 



Spraying — -why and how, L. R. Taft ( Michigan Sta. Spec. Bui. 4. pp. 13-19, Jig. 1). — 

 A popular discussion of the subject, noting formulas for insecticides, fungicides, and 

 apparatus. 



Instructions in spraying (Ontario Dept. Agr. SjJec. Bui., Mar., 1898, pp. 16, figs. 

 13). — Directions are given for the preparation of fungicides and insecticides and 

 the treatment of different host plants for the prevention of attacks of injurious 

 fungi and insects. 



White arsenic as a substitute for Paris green, L. R. Taft (Michigan Sta. Rpf. 

 1S9G, pp. 119, 120). — Arsenic is found to be much less expensive than Paris green and 

 fully as efficient if not more so. One pound is placed in 2 gal. water with an equal 

 weight of freshly slacked lime and boiled for 30 to 40 minutes. The resulting insolu- 

 ble calcium arsenate is sufficient for 400 gal. water. At this strength it can be 

 employed on all kinds of fruit along with Bordeaux mixture. It costs about one-fifth 

 as much as Paris "recn. 



