832 CONNECTICUT EXPERIMENT STATION REPORT, 1907-I908. 



The palpi are prominently elongated, and project in front of 

 the head, as is the case with other members of this group, which 

 on account of it are called snout-moths. They are called deltoid 

 moths on account of the distinct triangular shape which they 

 assume when at rest with wings folded. 



The appearance of all stages of this insect is shown in Figure 

 18 on p. 831 and on Plate LVII of this Report. A technical 

 description of the adult has been pubUshed by Professor J. B. 

 Smith* with synonymy. 



Remedies. 



It is to be regretted that experiments were not conducted with 

 different insecticides, but at the time of the complaints most 

 of the damage had been done, and the larvae had disappeared. 



In case of Lima and other "shell" beans, the plants 'could 

 be sprayed with lead arsenate, but any poison would be out of 

 the question on string or snap beans, where it may be possible 

 to apply air-slaked lime or some other fine powder by means of 

 a blow-gun to suffocate the larvae. From their habit of dropping 

 when disturbed the writer has suggested that the vines be brushed 

 or shaken and the larvae caught in a dish of kerosene or killed 

 upon the ground. No doubt a good spraying of the under side 

 of the leaves with strong soap and water would kill many of 

 the caterpillars, especially the smaller ones. 



Usually this insect feeds upon clover, and the damage is so 

 slight that no remedial treatment is necessary. 



TREATMENT OF CABBAGE PLANTS TO PREVENT ^ 

 INJURY BY THE CABBAGE MAGGOT. 

 By W. E. Britton and B. H. Walden. 



Mount Carmel Experiments. 



In the Report of this station for 1906, page 301, there was 

 published a note about dipping plants in a mixture of lead arsenate 

 to prevent injury by the cabbage maggot, Pegomyia brassicw 

 Bouche. This practice was continued in 1907, but in both these 



* Revision of the Deltoid Moths, Bulletin 48, U. S. National Museum 

 p. Ill, 1895. 



