94 



IXJUEIOUS lif SECTS 



towards the latter end of June, and tlie second in Angust. 

 The first brood stays undergi'onnd about a fortnight 

 before it emerges in the perfect beetle state; and the 

 second brood stays there all winter, and only emerges at 

 the beginning of the following June. The perfect Beetle 

 (fig. b'4,) is of a pale yellow color, with three black 

 strij^es on its back, and bears a general resemblance to 

 the common Cucumber-bng [Diabrotica vittata^ Pabr., 

 see fig. 27, p. 42). From this last species, however, it 

 may be readily distinguished by the remarkable pinching 

 in of the sides of its thorax, so as to make 

 quite a lady-like waist there, or what nat- 

 urahsts call a ^° constrictiou." It is also 

 on the ayerage a somewhat larger insect, 

 and differs in other less obvioas resj)ects. 

 As in the case of the Colorado Potato-bug, 

 Fis:. 64. the female, after coupling in the usual man- 

 ^BJiSS 'le.-, lays her yellow eggs (%. 63, d,) on 

 the under surface of the leayes of the 

 potato plant. The larv^ hatching from these require 

 about the same time to develop, and when full grown, 

 descend in the same manner into the ground, where they 

 transform to pupfe (fig. 63, c.) within a small oval 

 chamber, from which in time the jDcrfect beetle comes 

 forth. The remedies for the Colorado Beetle should be 

 used for this. 



THE COLORADO POTATO-BEETLE. 

 {Doryplioro. 10-Uneata, Say.) 

 EETE05PECTITE. 



In 1819 the United States Govemment fitted out an 

 ex]3loring expedition to the Xortliv^^est Territories under 

 the command of Major StejAen H. Long. The zoologist 

 of this expedition was Mr. Thomas Say, of PhiladeljDhia, 



