150 journal of economic entomology [vol. 7 



Experiment 1 



July 1, 1913, six quart bags containing cow peas previously sifted 

 Df all dead weevils and having only live weevils present were placed in 

 a fumigation box of 8f cubic feet capacity. Two ounces of concen- 

 trated ammonia were used. 



July 2, the results were as follows: 



July 2, 1913, six quart bags of cow peas containing living weevils as 

 in. the previous experiment were subjected to 3 ounces of concentrated 

 ammonia in the same fumigating box. 



July 3, the results were as follows : 



Dead Alive Per cent Killed 



1 42 100 



2 61 100 



3 74 1 99 



4 64 100 

 6 52 100 

 6 25 100 



Further experiments were undertaken with a 50-pound bag of cow peas 

 which, Avith 3 ounces of the concentrated ammonia and an exposure of 

 48 hours, gave from 75 to 85 per cent of weevils killed. 



Experiments were tried with a 100-pound bag, the amount of con- 

 centrated ammonia being increased to 1 ounce to the cubic foot, but 

 even this amount failed to give a high mortality. Further experiments 

 with ammonia are under way to ascertain its value as a fumigant against 

 household insects and stored product insects on a large scale. 



A NEW SPECIES OF KERMES FROM CONNECTICUT 



By Geo. B. King, Lawrence, Mass. 



Kermes waldeni, n. sp. Adult female scale: Globular, 5 mm. in 

 diameter, shiny. Surface, yellowish brown, with four transverse very 

 dark brown bands on the meson, and marbled with brown somewhat 

 darker than the general surface color. Some of the marblings are 

 circular. The surface is also marked with some dark brown dots, 



