12 



ZOOLOGY 



parts are used for biting. The largest representative of 

 this group is the Horned Corydalis (Fig. 11), whose larva 

 lives in streams and is called the clobson. The adult 

 is found among fallen leaves or on tree 

 trunks. 



The order Hemiptera includes certain 

 insects which resemble the Orthoptera in 



FIG. 12. Hygrotreclms, water-strider. Nat. size. 

 Photo, by W. H. C. P. 



undergoing an incomplete metamorphosis; 

 i.e. in having larvie much like the adults 

 in form, and in having no (juiet pupal 



stage. They differ 

 from the ( )rthoptera 

 in possessing mouth- 

 parts adapted to 



.V 



FIG. 13. Reduvius, the 

 assassin bug. Black. 

 Nat. size. Photo, by 

 W.H. C. P. 



FIG. 11. - - Cory- 

 dalis, the dobson. 

 Two -thirds nat. 

 size. Photo, from 

 life by AV.H.C.P. 



sucking. 



The True Bugs (Heteroptera) in- 

 clude a vast number of generally 

 small insects with very varied habits. 

 Some of them swim through the 

 water and are known as water boat- 

 men ; others skip over the surface of 

 the water and are known as water- 

 striders (Fig. 1-). Others, like the 



