1918] ECONOMIC ZOOLOGY ENTOMOLOGY. 61 



cussion includes photographs of fly traps and a design for a fly ':rap for use in 

 camp. 



Hibernation of the house fly in Minnesota, C. W. Howaed {Jour. Econ. Ent., 

 10 (1917), No. 5, pp. 46-^-468). — The observations here reported show that the 

 temperature of Minnesota winters is not favorable to the overwintering of the 

 house fly in any except the adult stage, and in that stage only in places where 

 there is a sufficiently high temperature and where food conditions are favor- 

 able. A list of 13 references to the literature on the subject is included. 



Key to the subfamilies of Anthomyidae, J. R. Malloch {Cannd. Ent., 49 

 {1917), No. 12, pp. 406-408). — Subfamily keys are presented for both males and 

 females. 



The food of Drosophila melanogaster, J. P. Batjmberger {Proc. Nat. Acad. 

 Sci., 5 {1917), No. 2, pp. 122-126). — The author's experiments show that yeast 

 is the food of Drosophila larvje. " The insect depends upon these cells for its 

 proteins and has no greater synthetic power than is common to higher animals. 

 Adult flies do not require proteins but survive for a much longer period on sugar 

 agar than upon yeast agar. This difference between the nutritional require- 

 ments of larva and adult is probably due to the rapid growth in the former 

 which requires proteins and leads to fatal changes in their absence." 



The genus Calosonia, including- studies on seasonal histories, habits, and 

 economic importance of American species north of Mexico and of several 

 introduced species, A. F. Burgess and 0. W. Collins {U. S. Dept. Agr. Bui. 

 417 {1917), pp. 124, pis. 19, figs. 5).— The first part of this bulletin (pp. 1-16) 

 gives a brief history of the genus Calosoma, a general seasonal history of 

 species of the genus, the number of generations, food habits of adults and larvse, 

 the economic importance of the species of Calosoma, limits on the increase of 

 the species, briefly describes an experiment to determine the climbing habits 

 of Calosoma larvjs, gives a brief account of their natural enemies, and records 

 methods of shipping and rearing Calosoma beetles. 



The remainder of the bulletin (pp. 16-124), which relates to their classifica- 

 tion, gives tables for determining adults and larvse, describes 38 species of the 

 genus, summarizes the present status of knowledge of their biology, and in- 

 cludes technical descriptions of their immature stages, so far as known, and a 

 chronological bibliography for most of the species. 



Scientifi.c note on beetles causing damage to cotton in Yuma Valley, Ariz., 

 E. A. McGregor {Jour. Econ. Ent., 10 {1917), No. 5, p. 504).— The loss of "about 

 5(X) acres of cotton, replanted twice, on newly cleared land is said to have been 

 due to Myochrous longulus. Investigations have shown that arrow weed 

 {Pluchea sericea), which was abundant on the land the previous year, is prob- 

 ably the native host plant of this beetle, and that when the land was cleared 

 they turned their attention to cotton. 



A clerid larva predacious on codling moth larvse, II, D. E. Merrill {Jour. 

 Econ. Ent., 10 {1917), No. 5, pp. 461-464)- — A record of further observations 

 (E. S. R., 31, p. 353) of this predacious beetle {Cymatodera wthiops) in New 

 Mexico. 



The asparagus beetles and their control, F. H. Chittenden {U. 8. Dept. 

 Agr., Farmers' Bui. 837 {1917), pp. 13, figs. 9). — A revision of Bureau of En- 

 tomology Circular 102, previously noted (E. S. R., 20, p. 59). 



Some weevils of the genus Diaprepes in the West Indies, J. C. Hutson 

 {Agr. Neivs [Barbados], 16 {1917), No. 395, p. 186). — These notes are based 

 upon identifications of West Indies collections by W. D. Pierce. See also a 

 previous note (E. S. R., 33, p. 360). 



The tobacco beetle and how to prevent damage by it, G. A. Runner {U. S. 

 Dept. Agr., Farmers' Bui. 846 {1917), pp. 22, figs. 7). — A summarized account 



