ECONOMIC ZOOLOGY — ENTOMOLOGY. 857 



caterpillars given in Group A. The polyhedra in the different species vary 

 greatly in size. The great difference in size whicli exists between polyhedra 

 in the same caterpillar tends to strengthen our view that the polyhedra are 

 reaction bodies." 



A bibliography of 11 titles is included. 



An illustrated catalogue of American insect galls, M. T. Thompson {Nassau, 

 N. Y.: Rhode Island Hosintal Trust Co., WIS, pp. 12, pis. 2i).— The first part 

 (pp. 5-46) of this posthumous work consists of a catalogue of the gall-making 

 Cynipidre of North America, with the classification arranged by galls and by 

 genera, and includes a bibliography of species descriptions (pp. 47-49). A sup- 

 plemental list of American gall-making insects (pp. 50-CG), and an index 

 to the genera and species are included. 



The fi.rst part of this catalogue is published practically as left by the late 

 author, while the second part, or supplemental catalogue, was assembled from 

 his original notes by the author's father, the late S. ]\I. Thompson, who is also 

 responsible for the selection and grouping of the illustrations on the plates. 

 The numerous plates, consisting of 246 separate figures, reproduce photographs 

 of galls taken by the late author. The work as a whole is edited by E. P. Felt. 



The transmission of exanthematous typhus to man and monkey by lice, 

 E. Sergent, H. Foley, and C. Vialatte (Compt. Rend. Acad. Sci. [Paiisl, 158 

 (1914), No. 13, pp. 964, 965). — This is a report of results obtained during the 

 course of experiments with recurrent fever conducted in Algeria, in continua- 

 tion of those previously noted (E, S. R., 24, p. 82). 



The authors call attention to the fact that Nicolle and his collaborators 

 (E. S. R., 22, p. 552) succeeded in four cases in transmitting exanthematous 

 typhus in monkeys through the bites of infected lice, and that Ricketts and 

 Wilder (E. S. R., 23, p. 559) have furnished indirect proof of this role of lice. 

 The authors' experiments confirm the above-mentioned results. They show that 

 exanthematous typhus may be transmitted to man through the bite of adult 

 infected lice and that lice taken from an individual thus infected may in turn 

 transmit the disease to monkeys. In addition it was found that the infection 

 acquired by a louse is hereditary and that individuals arising from eggs laid 

 bj'' an infected louse may transmit the disease. 



The application of iron sulphate in orchards (Sad, Ogorod i Bakhcha, 

 No. 5 {1914), pp. sot, SOS; abs. in Rev. Appl. Ent., 2 {1914), Ser. A;No. 8, pp. 

 515, 516). — The application of iron sulphate is recommended to destroy moss 

 and lichens on trees and as a remedy for Psylla mali. A 3 per cent solution 

 should be applied before the buds sw^ell, but since it does not destroy all the 

 eggs of this psyllid, a further spray consisting of 0.5 or 0.75 lb. of tobacco 

 extract in 11 q.t. of water immediately after the larvae have hatched is recom- 

 mended. 



Notes on some Colorado aphids having alternate food habits, C. P. 

 Gillette and L. C. Bkagg {Jour. Econ. Ent., 8 {1915), No. 1, pp. 97-i 03). —Notes 

 are here presented on 31 species, among which mention may be made of Chermes 

 cooleyi, Pemphigus hetce, Schizoneura americana, S. rilei/i, S. cratcegi, S. lani- 

 gera, etc. 



The brown, grape aphid, A. C. Baker and W. F. Tlt?ner {Science, n. scr., 

 41 {1915), No. 1066, p. 834). — The authors report upon observations at Vienna, 

 Va., of the life cycle of MacrosipJium viticola. The eggs are deposited in the 

 axils of leaves of Viburnum prunifoUum in late October or November and the 

 young hatch out in the spring before the leaves open and feed on the bursting 

 flower buds. The second generation matures late in April or in early May 

 and nearly all become alate. The alate forms are unable to subsist on Vi- 

 burnum and migrate to the grape where they produce a third generation and 



