ECONOMIC ENTOMOLOGY. 



week into little grubs. These begin feeding on the leaves, 

 and maturing in two or three weeks descend to the ground 

 and pupate under rubbish or in the earth. 



They remain from ten to twelve days in this state, when 

 they emerge and the process is repeated, — the number of 

 yearly broods varying, sometimes being as many as four or 

 five, and at other times only two or three. 



A closely allied beetle (Doryphora juncta, Germar), is 

 often mistaken for the real one, but this latter feeds on 

 various species of Solanum, (the genus which includes the 

 ground-cherry, horse-nettle, etc.,) and never attacks the 

 potato. 



Remedies. Paris green or some other arsenical poi- 

 son is the most effectual. One pound of it should be mixed 

 with twenty of pulverized plaster, or with common flour, 

 and dusted on the leaves in the early morning, the dew 

 holding it there. 



It may also be applied to advantage just after a shower. 

 A duster made of a tin box, with a perforated bottom, and 

 a handle four or five feet long, is recommended. 



Care should be taken not to inhale any of the green, as 

 it is a deadly poison. 



London purple may be substituted for the green and 

 will be found as effective as well as considerably cheaper. 



THE PEA WEEVIL. 



{Bruchus pisi, Linn.) 



" The Pea Weevil," says Treat, " is easily distinguished 

 from all other species of the genus with which we are 

 troubled, by its larger size, and by having on the tip of the 

 abdomen * * * two dark oval spots, which cause the 

 remaining white portion to look something like the letter 



