OF THE FARM AND GARDEN. 



97 



or unfavorable. When full grown, the larvae descend to 

 the ground and hide under leaves or rubbish, or burrow 

 into the soil, where they remain for ten days, then come 

 forth in the perfect or winged form. Two to four broods 

 are perfected during the season, according to the locality 

 and length of the season, the last brood descending into 

 the ground in the perfect or beetle state, and remaining 

 in a dormant condition overwinter, — reappearing as soon 

 as the ground has become sufiBciently warm to awaken 



Fig. 65. — COLORADO POTATO-BEETLE {Doryphora 10-lmeatd). 



a. a, Eggs ; b, b. Larva in different stages ; c. Pupa ; d, d, Perfect Beetles of natural 



size : e> Left Wing-cOTer, enlarged. 



them from their slumbers. The beetles at this time may 

 usually be seen crawling about very rapidly, looking for 

 the first shoots of the potato as it appears above ground, 

 which they attack as though their appetite had been 

 sharpened by a long fast. 



This beetle is now too well known to need description, 

 but it may be well to note that there is a closely allied 

 species (Doryphora j'uncta, Germar.), often confounded 

 with the genuine "ten-liner," although it never attacks 

 the Potato, but feeds upon various species of wild Solanum, 

 5 



