ECONOMIC ZOOLOGY — ENTOMOLOGY. 857 



of making accurate deteriiiiiintious of all insects and species of plants found in 

 birds' stomachs. 



The food of the crow blackbird, IL Garman {Kentucky Sta. Bid. 130, pp. 

 I'J-J/l, figs. S). — The habits of the crow blackbird in Kentucky are discussed in 

 considerable detail. A number of these birds were shot in April, May, July, 

 August, September, October, and November of 1906. A careful examination of 

 the stomach contents indicated that the food consisted of G3.08 per cent vege- 

 table material and 30.02 per cent insects. The percentage of insect food rises 

 from May to July and then falls suddenly in August. Much of the grain which 

 is eaten is believed to be gleaned and therefore of no value, and the author 

 comes to the conclusion that the crow blackbird is beneficial rather than harm- 

 ful. Copies are given of a number of letters from farmers containing their 

 opinions of the economic status ot this bird. 



Insectivorous birds and injurious insects, G. Severin {Bui. Soc. Cent. For- 

 est. BcJg., l.'i {1907), Nos. 9, pp. 536-548; 10, pp. 600-609).— A list is given of 

 various agricultural and horticultural crops with notes under each crop on the 

 most important insect pests and the agency of birds in destroying them. 



Study of insects: Homoptera. Economic entomolog'y. Robins, H. A. Sur- 

 face {Zool. Bui. Pcnn. Dept. Agr., J (1907), Xo. 3, pp. 67-96, pis. S). — A general 

 systematic account is given of 8 families of homoptera. Biological and eco- 

 nomic notes are also presented on grain moth, rose bug, and flea-beetles. The 

 subjects of spraying and the economic status of the robin are also discussed. 



Combating' injurious insects {Bui. Soc. Cent. Forest. Belg., II/. {1907), Nos. 

 6, pp. 33S-35-'t; 7, pp. 411-426; 8, pp. 4~'i-^^8). — A general account is given of 

 the results obtained by various investigators on the importance of insectivorous 

 birds and parasitic and predaceous insects in the control of insect pests. 



Directions for treatment of insect pests and plant diseases, E. D. Sander- 

 son {Rpt. B(l. Agr. [V. H.], 29 {1905-6), pp. 151-175). — Directions are given 

 for the treatment of orchard fruits, shade trees, gardens and greenhouse crops 

 for the control of insect pests and fungus diseases. Formulas are given for 

 the preparation of suitable remedies. 



Report of nursery inspector. E. D. Sanderson {Rpt. Bd. Agr. [jV. 77.], 29 

 {1907), pp. 287-294). — An inspection was made of the three nurseries which are 

 located in the State. A brief account is given of the conditions observed on 

 these premises and also of the present status of the brown-tail and gipsy moths. 



Nursery and orchard inspection. Economic entomolog'y, H. A. Surface 

 {Zool. Bui. Priin. Dept. Agr., 5 {1907), No. /,, pp. 97-12S, pis. 2).— A list of. 

 Pennsylvania nurserymen is given with brief notes on nursery inspection, tree 

 dealers, orchard inspection, houseliold fumigation, and tlie treatment of seeds 

 for ins€>ct pests, together witli a brief account of the stalk borer. 



Further researches on North American Acridiidae, A. P. Morse {Carnegie 

 Inst. Washington Pub. 68, pp. 54, pis. 10). — Studies were made on the ecology 

 and distribution of locusts in the region from Tennessee to Texas. Short- 

 winged species were more numerous in humid than in arid regions. Observa- 

 tions were also made on the coloration of locusts and on their local distribution 

 in various areas. 



The eastern plague locust, W. W. Froggatt {Agr. Oaz. N. 8. Wales, IS 

 (1907), No. 6, pp. 539-541, pl. 1). — Several species of locusts have occurred in 

 swarms in New South Wales. In the present article attention is given to 

 CEdaUus senegalensis, which has caused great damage to grass and cultivated 

 crops. Brief mention is made of insect and fungus parasites observed on these 

 locusts. 



Locusts in India, II. M. Lefroy {Agr. Jour. India, 2 {1907), No. 3, pp. 238- 

 245, pis. 7). — Two species of locusts, Acridiutn succinctuin and A. pcrcgrinuin, 



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