ECONOMIC /OOLOGY- — ENTOMOLOGY. 58 



Thirty-seventh annual report of the Entomological Society of Ontario 



iAiiii. liiil. Kilt. Soc. Oiitaiii). .n {l!»Hi). pii. 1.1(1. iih. 7. ///yx. .i>l). — TIk' rorly 

 third .lunu.il iiicci in;; «>f llic society was held at (Juclpli. Ontario, October Id a!i(l 

 11, r.Mx;. and tile iireseiit repoi-t cdntaiiis an account of the proc'eodin,t,'s. 'I'lie 

 rava.s^es of (lie codlinu- niotli and the natural pai'asites of this pest were discussed 

 by .1. Fiet<-iiei- and ^\■. I'.rodie (pp. :'.-iri). r.rief notes on the insects of the year 

 in various districts of Ontario were ^ixcn by C. II. Young ot ai. (pp. I.j-ID). 

 Sinuiar notes on injurious insects were presented by C. J. S. Bethune (pi). 4.">-.")(; » 

 and .J. Fletcher (pp. S1-S1>). 



Other matters discussed at the meetings included tlie insect gulls of Ontai-io, 

 insects injurious to linden, locust mite, oyster-sliell l)ark-louse, bean weevil. San 

 .lose scale, and various species of bemiptera. 



Report on injurious insects and plant diseases for 1906, W. M. Schoykn 

 { Beret iiiiin (iiii Slh'0<tcin.^ckt('r o(; I'laiitcsuf/doiiuiir i Liniil- an niirclinit/cl I'.iiiC. 

 Cliristiaiiid : (liiiiidithl c(- Souk, lfH)7, pi). SO. fnis. /', ). — During the year under 

 report attention was given to fruit flies, grain aphis, wheat rust, and a numljer of 

 other insect pests and fungus diseases of cereals, clover, and garden crops, i)ar- 

 ticiilarl.v cabbage, potatoes, tomatoes, and melons. The depredations of certain 

 fruit pests are also noted, particidarl.v pear blister-mite, currant sa\vfly, and 

 Ia'cuhIiiiii liliis. 



Entomological work of the state agricultui'al institute in 1906, I'oskia 

 (fill/. Ai/r. I /{//(s-.sr/.v I, .1.1 U'.xr,). So. >. jiji. Il.l-iat). — A general outline is 

 given of the conditi(tns under which specific insecticide treatments are indicated 

 for the control of injurious inscf ts. I'articular attention is given to suitai)le 

 nisecticides for (he treatment of biting insects. The formulas commonly i>ro- 

 posed for Paris green, London lairiile, and arsenate of lead are discussed and 

 reconnnendations are given regartling the time and method of application of 

 tliese insecti<-ides. 



The grasshopper problem and alfalfa culture, F. M. \Vebsteb (['. N. Dcpl. 

 .'■(/)-.. Bin: /Jut. Circ. .s''/. pji. KK pf/s. 8). — During the ])ast few .vears serious 

 depredati(ms have been reported from the attacks of grasshoppers on alfalfa. 

 The species chiefly concerned are Melanopliiit diffcrentialis ;nul M. hivitttifii.s: 

 Notes are given on the habits and life history of tliese grasshoppers. About 100 

 species of birds are known to feed upon them, and llie.v are also held in check 

 to some extent by the attacks of insect parasites and a fungus disease. 



^Vherever the grasshoppers aiv abundant, however, it is necessary to adopt 

 artificial means of repression. 'ITie best means are the destruction of tlie eggs 

 by plowing or harrowing, catching the young grasshoppers in hopperdozers, and 

 ilie use of poisoned baits, ])articulai"ly Criddle mi.xture. 



The cotton bollworm, F. (". Bishopp and C. K. .Jones {{'. ^S'. Dept. .{(jr.. 

 i'linncrN lint. .>'.)(l. pp. ,?i, /f//.s-. '/). — The life cycle, food plants, seasonal history, 

 a.nd injuries caused by the bollworm are briefly outlined. In combating this ])est 

 the authors recommend thorough fall or winter plowing, the use of early 

 varieties of cotton, heavy fertilization, early i)lanting, and frequent cultivation. 



The spring grain-aphis, F. M: Weisstek ( T. ,S'. Dept. Ayr., Bur. Eiit. Circ. 

 ■"'■'i. i)i>. 7. /ii/s. -U. — The .general ap]iearance. seasonal history, food plants, out- 

 in"eaks, and natural enemies of This pest are ln-iefly noted. The aiithor believes 

 ;liat the l)est is usually held in check by its natural enemies and by unfavorable 

 ( liniatic^ conditions. Late sowing is suggested as a m(>ans of preventing an 

 attack of the aphis upon tall grain and rolling or brushing are recommended for 

 reducing the infestation of grain. 



The corn leaf-aphis and corn root-aphis, F. M. Weustek {f\ S. Dept. At/r.. 

 Bur. iUit. Circ. Si;, pp. J.j. fi<;.^. J). — It is uncertain whether tliere is any genetic 



