355 



III August, IS.SG, one iiijuied larva was received from the well-known 

 horticulturist, Mr. J. T. Lovett, of Little Silver, K. J., wliich be had 

 found feediug upon Liuia beans. Mr. Lovett wrote that the larva eats 

 a small hole through the pod in such a way as to reach tlie bean, which 

 is eutirely excavated. July G, 1892, Mr. Pergaude, of this oflice, fouud 

 one ot tliese larv;e eatiug iuto the pod of a garden bean near Ivy City, 

 in the District of Columbia. July 14 this larva changed to a chrysalis, 

 and the butterfly issued July 25. October 18 of the same year one of 

 these larvjB was found in the same locality eatiug into the pod of a 

 liima bean. 



Mr. Coquillett informs us that he found a larva of this species feediug 

 on beans at Los Angeles, Cal., September 5, 1889. It pupated Sep- 

 tember 9, and the butterfly issued September 20, 



This insect is not likely to become a serious enemy to the beau crop, 

 although in Harris's time some farmers are said to have been obliged 

 to abandon hop cultivation on account of the work of these larva\ The 

 larva is parasitised by an Ichneumon fly known as Anomnlon pneudar- 

 giole How., the adult of which issues from the chrysalis, and this insect 

 may be an important factor iu regulating the increase of the butterfly. 



The very sensible measure which Mr. Scudder adopted in his great 

 work on the butterflies of New England, of giving a final paragraph 

 under the consideration of each species to the subject of desiderata, 

 enables us to say at once that even from these fragmentary observa- 

 tions we have added something to the general knowledge of the life- 

 history of this insect. Mr. Scudder says: "We have then scarcely a 

 single satisfactory datum whereon to build the history of this insect." 

 The facts recorded above show that in the District of Columbia there 

 are at least two generations annually, and that the duration of the 

 chrysalis state in midsummer is about eleven days; while in Southern 

 California, more than two broods apparently occur, the duration of the 

 chrysalis stage in September being the same as that with the mid- 

 summer brood in the District of Columbia. 



GENERAL NOTES. 



A HOMEMADE COVER FOR FUM1G4TION WITH niSTTLPHIDE OF 



CARBON. 



Mr. Edward B. Taylor, of Cleveland, Ohio, in a recent letter sug- 

 gests the following method of making a, cheap cover for use in fumigat- 

 ing low-growing plants with bisulphide of carbon : 



Take a barrel hoop, cut it in two, and fasten the pieces at right angles 

 to each other, by making a hole with a brad awl through both and 

 inserting a screw eye with the eye on the convex side, to be used as a 

 handle for lifting. Spring the hoops to make a cover of the size 



