19171 ENTOMOLOGY. 57 



yds. from the point of release, the latter being the greatest distance at which 

 recaptures were attempted. 



"The full possibilities of dispersion were not determined, due to the rela- 

 tively small size of the city, but the fact that flies spread from release points 

 on one border to points on the opposite side indicates a possible radius of 

 2,333 yds. (IJ miles), and that files even traversed the entire city and crossed 

 open country to points beyond justifies the belief in a still greater radius. 

 The actual territory over which flies were recovered in the city was about 

 2 square miles, but possible dispersion over a territory of from 5 to more 

 than 12 square miles was indicated." 



A bibliography of 11 titles is appended. 



Some observations on the breeding habits of the common house fly 

 (Musca domestica), A. T. Evans (Jour. Econ. Ent., 9 (1916), No. 3, pp. S5^- 

 S62, pis. 3). — The author reports experiments carried on during the summer of 

 1915. With a single exception, no larvae of the house fly were found breeding in 

 garbage. 



Sarcophagidae of New England: Genus Sarcophaga, R. R. Parker (Jour. 

 Econ. Ent.. 9 (1916), No. 4. PP- 438-^1, fig. 1). — A new species, the occurrence 

 of which in abundance was limited to the presence of larvse of either the gipsy 

 moth or forest tent caterpillar, especially the latter, is described as Sarcophaga 

 aldrichi. The status of this species in the economy of nature remains to be 

 determined. 



Notes on Pegomya hyoscyami, E. N. Cory (Jour. Econ. Ent., 9 (1916), No. S, 

 pp. 312-315. fig. 1). — The author reared this dipterous leaf miner from lamb's 

 quarters (Viicnopodium album), spinach (Spinacia oleracea), and pigweed 

 (Amarantus retroflexus) in Maryland, and presents ob.servations on its biology. 

 The parasite Opius fovcolatus was reared from nearly every lot of miners. 

 Studies of this insect by Cameron in England have been previously noted (E. S. 

 R., 32, p. 351). 



The columbine leaf miner, E. N. Cory (Jour. Econ. Ent., 9 (1916), No. 4, pp. 

 419-424, pi. 1, figs. 2). — A report of biological studies at the Maryland Experi- 

 ment Station of Phytomyza nquilcgicp. which mines the leaves of Aquilegia spp. 



Injury to peanuts by the twelve-spotted cucumber beetle (Diabrotica 12- 

 punctata), D. E. Fink (Jour. Econ. Ent., 9 (1916), No. 3, pp. 366-368. pi. 1).— 

 The author has found that peanut pods, particularly when still young and soft, 

 are subject to serious injury by the larva of this beetle. Rotation and vigorous 

 growing crops are decided factors in controlling or keeping the crop free from 

 attack by this pest. 



Lachnosterna larvae as a possible food supply, L. O. Howard (Jour. Econ. 

 Ent., 9 (1916), No. 4, pp. 389-392). 



A note on the predacious habits of Dineutes (" whirligig beetles ") toward 

 Anopheles larvse, R. C. Deriv.4.ux (Pub. Health Rpts. [U. S.], 31 (1916), No. 20, 

 pp. 1228-1230). — The author's observations have led to the inference that, while 

 capable of swift destruction of Anopheles larvae under experimental conditions 

 and in the absence of protecting vegetation and flotage, Dineutes alone are not 

 of sufficient efficacy as natural enemies to justify considering waters inhabited 

 by them as free of dangerous potentialities as Anopheles breeding places. 

 "Under natural conditions, their influence on Anopheles propagation is of but 

 small practical importance." 



The eggplant tortoise beetle, T. H. Jones (U. S. Dept. Agr. Bui. 422 (1916), 

 pp. 8, figs. 3). — In the spring of 1915 the larvae of Cassida pallidula were a 

 source of injury to the foliage of eggplant and Irish potatoes at Baton Rouge, 

 La. During that year studies were made of its biology and experiments con- 



