42 
Development and Metamorphosis 
Fig. 72. —Developing stages, after hatching, of a locust, Melanoplus femur-rubrumt 
a, just hatched, without wing-pads; b, after first moulting; c, after second moulting, 
showing beginning wing-pads; d, after third moulting; e , after fourth moulting, 
/, adult with fully developed wings. (After Emerton; younger stages enlarged; 
adult stage, natural size.) 
Fig. 73. —Stages in development of the wings of a locust. /., developing rudiment of 
fore wing; h., developing rudiment of hind wing; w„ wing-pad. (After Graber; 
twice natural size.) 
