K< ( >.\< ) M I ( • Z( >0L< M I ^ ' — E NT< >MOLOGY. 47^ 



sion of Haplophyton cimiciduin. The natural checks to the spread of this pest are 

 changes of temperature and the presence of parasites. Trypeta ludens appears not to 

 be native to Mexico bul is probabl) introduced from some part of South America. 

 It attacks nol only Bweel oranges bul also the mango and guava. 



The parasitological commission of Mexico recommends that all infested mangoes, 

 lemons, oranges, and guavas be collected daily and deposited in a suitable place for 

 destruction once a week. Such t'ruit should be destroyed either by burning or 

 burying to a depth of 20 in. 



Insects of the pecan, II. A. Gossard I Florida Sta. Bul. 79, pp. 981 SJ8, pis. ;, 

 figs. ?). The present bulletin contains essentially a brief monograph of the important 



insert pests of the pecan. 



Pecan bud-moth I ProteopU ryx deludana) is one of the most serious of these pests. 

 The insect is described in its different stages and notes are given on its habits. 

 Several natural enemies are known, but their effectiveness is nol ye1 determined. 

 Spraying with arsenicals including Paris green and arsenate of lead did not give 

 encouraging results. The use of lime-sulphur-salt wash was much more satisfactory. 

 Infested pecan buds were fumigated for30minutes with hydrocyanic-acid gas. The 

 buds were not injured by the treatment, but the moths seemed not to be destroyed. 

 Not more than 15 to 20 per cent of the buds survived on account of later infestation. 

 In nursery practice it seems to be necessary to remove the cocoons with a knife. 



The pecan case-borer (Acrobasis nebullela) is also a serious pesl and is described 

 with notes on its habits and life history. This pest is also attacked by parasites and 

 birds. In the control of this insect it appears that the remedies most successful in 

 use againsl the pecan hud-moth are also hot for use against this species. Note- are 

 also given on the appearance, habits, life history, and means of combating species 

 of Catocala, Sesia scitula, Datana integerrima, fall webworm, twig girdlers, oak pruner, 

 hickory-nut weevil, hickory bark-borer, white ant, cottony maple scale, etc. 



Insects injurious to forests, A. L. Herrera (Com. Par. Agr. [Mexico] Circ. 

 .".). pp. .;, figs. 8). — Particular attention is given in this circular to a discussion of 

 Dendroctonus and related forest insects with reference to artificial insecticides and 



methods which have been found to be effective in controlling these pestsand also to 

 their natural enemies. 



Texas fever ticks (Oklahoma sin. Rpl. 1905, pp. ?8 30). Attention is called to 

 those features in the life history of cattle ticks which makes it possible to exterminate 

 the tick by a System of rotation of pastures and direct treatment of cattle for- tick 



infestation. The greal advantages of tick extermination are briefly discussed. 



Means for the destruction of mosquitoes, A. F. Mankowski (Centbl. Bakt. 

 [etc.'}, 1- AbL, Orig.,89 ( 1905), No. 8, pp. 271 -279, figs 8). — Brief reference is made to 

 experiments previously carried oul by other investigators in the infection of mos- 

 quitoes with various species of bacteria. 



In the study of mosquitoes in Bessarabia a mite was found infesting mosquitoes 

 under the wings and various other parts of the body. An examination of the para- 

 sites showed them to be undoubted mites about g mm. long. From one to six para- 

 rites were found on each infested mosquito, and aboul •"><) per cent of all mosquitoes 

 studied were infested. The importance of this parasite appear- to be quite great, 

 since the number of mosquitoes and the extent of malaria were considerably reduced 

 during the year-. 



Report of the inspector of fumigation appliances, 1904, P. \\ '. Hodgetts 

 | Toronto: Ontario Dept. Agr., 1905, pp. 11, figs. 5) .—The practices of various nursery- 

 men with regard to transplanting and handling of stock are briefly described. The 

 effects of severe winter cold upon San Jose* scale were studied. It was found that the 

 severity of winter had little effect in controlling the mn u hers of the scale. The insect 

 was more seriously affected by cold on peach and plum trees than on apple trees. In 



