THE COLOKADO POTATO-BEETLE. 
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DESCRIPTION OF PLATE CXXI. 
Fig. 1. Portion of a Potato-plant, with the Colorado Potato-beetle 
(Doryphora 10 -lineata) in the egg («), larva ( b , c, d), and 
imago (e). 
Fig. 2. Pupa, of the natural size. 
Fig. 3. Imago, of the natural size. 
Fig. 4. Underside of the imago. 
Fig. 5. Left wing-case, enlarged, showing the arrangement of the black 
lines ; a, outer margin. 
Fig. 6. Left wing-case of Doryphora juncta , enlarged, showing the 
arrangement of the black lines ; a, outer margin. 
