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TRANSFORMATIONS OF INSECTS. 



DIGESTIVE APPARATUS OF AN BlGESTIVE APPARATUS OF A 



HERBIVOROUS INSECT. CARNIVOROUS INSECT. 



THE GREEN GRASSHOPPER THE WATER BEETLE 



{Locusta viridissima). {Dytiscus marginalis). 



a CEsophagn-is. b Crop, c Gizzard, d Stomach, e Small intestine. / Large 

 intestine, g Salivary glands, k Biliary and urinary canals. 



