COLEOPTERA. 



covering their backs with their own excrement. They 

 transform in the ground in earthen cells. The perfect 

 insects appear in August, and lay eggs for a second 

 brood, which hybernates in the ground as pupje. (2, 

 118; 5, I., 26; 6, II., 25). 



The Colorado Potato-Beetle, Doryphora decem-linc- 

 3^'ata Say.— The eggs are laid in clusters on potajto 

 leaves, upon which both larva: and the perfect insects 

 feed. The larvie go into the ground to transform. 

 There are three broods each season. The last brood 

 remains in the ground during the winter, usually in 

 the beetle state ; a few, however, hybernate as pupae. 



Original habitat, Rocky Mountains. Note manner 

 of its march eastward. 



Remedy. — Paris green. 



(I, 508 ; 3, I., loi ; 3, IV., 5 ; 4, IX., 229 ; 5, I., 41 ; 

 5, II., 289; 6, I., I ; 6, I., 84; 6, II., 13). 



For a discussion of the poisonous qualities of the 

 Colorado Potato-Beetle, and treatment of poisoning, 

 see E. M. Hale, M. D., in the Trans, of the Hom. 

 Med. Soc. of the State of N. Y., vol. VII., (1869), p. 

 142. 



The Striped Squash-Beetle, Diabrotica vittata Fabr. 

 ^^' (i, 505; 5. II. ,24). 



The Cucumber Flea-Beetle, Haltica {Crepidoderd) 

 ciicumcris Harris, (i, 506 ; 2, 127 ; 3, I., lOi ; 5, 1, 27). 



CocciNELLlD/E (" Lady-Birds "). 



These insects are well known to nearly every child, 

 under the popular name given above. They are hemi- 

 spherical, generally red or yellow, with black spots, or 

 black, with white, red or yellow spots. They are very 



