458 EXPERIMENT STATION RECORD. [Vol.40 



sufficiently late to kill the last batch of larvse, or before season suitable for the 

 completion of their aquatic stapes in the spring." 



On mosquito larvicides, H. B. Kif.k {Trans, ami Proc. New Zeal. Inst., 50 

 (1917), pp. 193-106). — This is a brief statement of work with several mosquito 

 larvicides in New Zealand. 



A contribution to the knowledge of the Brazilian CEstrinae, A. Lvtz {Mem, 

 Inst. Osicaldo Cruz, D (1917), No. 1, pp. 94-113. pis. J; BOB. in Rev. Appl. Ent., 

 Ser. B, 6 (1918), Xo. 7, pp. 129, 130). — The author takes the view that CEstrime 

 should be treated as a subfamily of the Muschhr. He gives a key to the I 

 genera observed in Brazil and a list of 20 Smith American species, most of 

 which occur in Brazil. Then follow notes on 15 species, of which 4 belonging 

 to the genus Cuterebra are described as new. Several of the species, Including 

 those described as new. are illustrated in colors. Notes on the parasitic habits 

 of the American GBstrlns follow < pp. 106-118). 



The distribution of the nose fly and other species of Gastrophilus in the 

 United States. F. Q BlSHOFF {Peycke, ft| {1911), No. 6, pp. 182-187, fig. 1).— 

 This paper la based upon studios by the Bureau of Entomology of the U. s. 

 Departmenl of Agriculture 



The common horse bot {O. IntestinaUM), Introduced into this country many 

 yours ago, baa become widely spread throughout the United states, though it 

 appears to vary much In local abundance. The chin fly tG. nasalit) is also 

 widespread over the United states. The doss fly < O. Kamorfhoidalie), the most 

 important economically of tlie throe, is a ser! i in the north 



central states, including North Dakota, South Dakota, Montana. Minnesota, 

 Colorado, [daho, Utah, Washington, Illinois, and Wisconsin. Montana and 

 North and South Dakota • rally Infested at this time, and central western 



Minnesota, northern Nebraska, and northeast Wyoming undoubtedly so. The 

 species is also known to occur in Manitoba and Saskatchewan. 



studies of these pesta by Dove, since published, have been noted (B. s. R., 

 89, p. 189). 



Gastrophilus duodenalis. .1. B. McifDt I Ssrol IrgenHna, 52 </ 



X<>. 7, /'/'■ /-'•'' //"• flt/S. tl). — A report of studies of this horse hot fly which 

 includes a map showing its distribution in Argentina. An account of studies 

 of this by Dove has been noted (B. s. EL, 89, p. 189). 



A serious pest to stored wheat, the lesser grain borer (Rhizopertha 

 dominica). W. W. PbooOATI {Agr. <laz. \. 8. Wales. 2'.' (1918), No. I". ;;• '■ 

 788, fin. 1). A brief aCCOUnl is given of this cosmopolitan enemy of wheat, 

 which has been established In Australia in a minor degree for many years and 

 is recorded as a common pest of Btored wheat in Smith Australia. In New 



South Wales it appears to be largely confined to the vicinity of Sydney. 



An account of this pest by Chittenden has been previously noted (B, s. EL, 

 25, p. 663). 



Four new African parasitic Hymenoptera belonging to the subfamily 

 IVficrogasterinae. A. B. C\h\n (Proc. U. 8. Nat If**., .',', {1918), VP 5X7-590). 



Beekeeping may increase the cotton crop. R. M. Mkmik {Joftr. Heredity, 9 

 {1918), Xo. 6, pp. \86, //.'/*. 2).— The investigation here reported upon in- 



dicates that the introduction of colonies of bees may prove of distinct ad- 

 vantage in the fertilization of long staple varieties of cotton. " It Is evident 

 from the increased yield of bolls secured in the long-pistilled DurangO variety 

 through artificial pollination that the presence of additional pollinating in<. 

 would aid in reducing the high percentage of shedding." 



Descriptions and notes on some ichneumon flies from Java, S. A. EtOBWB 

 (Proc. U. S. Nat. Mus., 54 {1918), pp. 568-570). 



