906 EXPERIMENT STATION RECORD. 



in detail, a number of tlie more common injurious insects, with tlie 

 proper remedies against them. The general subject of spraying is also 

 discussed. 



The following insects are treated : The bee moth ( Galleria mellonella), 

 the grain plant louse {Si2>1ionoj)hora a rena'), the glossy cutworm [Hadena 

 devastatrix), the jointworm {Isosoma hordei), grasshoppers (Acrydiidte), 

 the cottony grass scale {Eriopeltis festiicce), the scurfy bark louse 

 [Cldonaspis fur/tirus), apple leaf sewer (P//o.ro|)fer/s nuheculana), straw - 

 berry slug {Harpiplwrus macuJatus), raspberry root borer [Bembecia 

 marginatn), the click beetle {Corymhites caricinus), the cankerworm 

 {Anisopteryx vernata and A. jiometaria), cigar case bearer {Coleophora 

 JfetchereJJa), peach bark borer [PhUeotribns Uminaris), black peach aphis 

 {Aphis persic(v-niger), Xew York plum scale {Lecanium cerasifex), the 

 parasites {Fachyneuron alUscuta and Eunotus Uvidns), the ladybird 

 {Hyperaspis signata), pear leaf blister mite (Phytoptus pyri), apple aphis 

 [A2)his maJi), woolly aphis {Sc}iizonet(r<( Janigent), carpet beetle or buffalo 

 moth {Anihrenus acropliidariw), and Ihe pea weevil {Bruchus pisi). 



The Australian sugar-cane pest (Lepidiota squamulata), H. 

 Tryon {Queensland Depi. Ayr. Rpt. 1S95-96, pp. oO). — This gives a very 

 full account of this beetle, its habits, and the means for checking it. 

 After a historical introduction, and a fall description of the insect 

 in its different stages from the egg to the adult, and a brief description 

 of the nature of the injury done by it, the author proceeds to give an 

 account of its habits. 



The grubs are found in enormous numbers, sometimes as many as 

 20,000 to 30,000 per acre. The opening up of lands to cultivation has 

 greatly facilitated their increase. Under natural conditions they are 

 found mostly in forest lauds, as is shown by the fact that they occur in 

 tlie first plant crop grown on new scrub land only in exceptional cases. 

 The grubs bore several feet into the ground, especially during dry 

 weather, and this fact accounts for their apparent absence from fields, 

 and for their sudden appearance in great numbers and in a nearly full 

 grown condition. They migrate laterally also, but as they will not pass 

 through the face of a cutting, a trench 3 ft. deep forms a sufficient bar- 

 rier. When this method is practicable they may be drowned by flood- 

 ing a field. Other remedies recommended for destroying the larvie 

 are hand picking, the planting of trap crops, and grubbing these out 

 from time to time; the use of bisulphid of carbon, and of kerosene 

 emulsion, common salt, kainit, and sulphate of potash. 



The adult state, the author thinks, in opposition to general opinion, 

 is reached within a year from the laying of the egg. This assertion is 

 based upon field observations and not upon experimentation. When 

 mature, the insect feeds upon a large number of plants, embraced 

 chiefly within the orders Sterculiaceie, Leguminosiv, Euphorbiace;i?, 

 and Urticacene. Plants of the last two groups are especially preferred. 



A long descriptive list of natural enemies is given, embracing several 

 mammals, hawks, crows, shrikes, plovers, tachnid flies, mites, and fungi. 



