287 



Wallace iu cultivated lands. J Ic states that it is only useful where 

 locusts are known to exist iu Avaste lands and where several miles of 

 screens are erected to arrest the natural march of the insects. Some 

 attempt was made at gatherinji- the locusts by hand, and the Goveru- 

 meut offered 2 piasters peroke (8.8 cents per 2^ pounds), but the peo- 

 ple did not seem to realize that they would be i)aid until most of the 

 e.ii'gs were deposited! 



Prof. Wallace states that small tlights of locusts are frequently 

 heard of in some parts of E<»ypt, and that forty years ajio they bred in 

 the country in great numbers and were exterminated by the peoi)le in 

 much the same mauuer as this year. Comparatively little damage was 

 done to crops the present year. 



LEPIDOPTERA WHOSE FEMALES ARE WINC^LESS. 



M. Cr. A. Poujade, in La Xature for December 2(5, 1891, gives an ad- 

 mirable summary of the natural history of the European species of 

 Lepidoptera without wings, in the course of a series of articles upon 

 the influence of artificial light upon insects. He calls attention to a 

 most interesting observation by Giraud, made as far back as 1805, 

 and which has seldom been repeated, to the effect that the wingless 

 females of Ilibernia andCheimatobia were found around the lanterns in 

 the Bois de Boulogne where they were sui^posed to have been either 

 attracted by the light or the abundance of male insects which had been 

 so attracted, and had climbed up the lamp-posts and had taken their po- 

 sition upon the glass sides of the lamp. The more natural explanation 

 seems to us that these females had been carried by light-attracted 

 males while in the act of copulation and had been deserted on the 

 glass side of the lamps. It would be very interesting to know whether 

 similar observations have ever been made in this country in districts 

 where the Canker Worm is abundant. 



TOBACCO INSECTS IN FLORIDA. 



In Bulletin Xo. 15 of the Florida Experiment Station, entitled " To- 

 bacco and its Cultivation," mention is madeof the damage done to the 

 crop by Cut Worms, the Bud Worm (probably Heliothis armigera) and the 

 Horn Worm {rrotoparce Carolina). Paris green and flour, in the propor- 

 tion of one pound of the poison to four or five pounds of flour, is the 

 mixture recommended as a remedy for these pests. It is supposed by 

 the author of the bulletin that the poison may injure the texture of the 

 leaf and also the flavor of the tobacco. Experiments on this point are 

 promised for the coming season. 



INSECT DISEASES OF THE MEDITERRANEAN ORANGE. 



In the Mediterranean Katuralist, a monthly journal of natural science 

 published at Malta, we find an article l)y the editor, John H. Cooke, 



