280 



METAZOAN PHYLA 



Fig. 179. — Life history of a hemimetabolous insect, a locust. A, oviposition. B, egg 

 mass in the ground. {From Walton, Farmers' Bull. 747, U. S. Dept. Agr., A after Webster.) 

 C to H, stages in the development of the red-legged locust, Melanoplus femur-ruhrum. 

 De Geer. C, just hatched; D, after first molt; E, after second molt, showing beginning of 

 wing pads; F, after third molt; G, after fourth molt; H, adult. C to G enlarged, H, natural 

 size. {From Kellogg, "American Insects," after Emerton, by the courtesy of Henry Holt & 

 Company.) 



