ORDERS. 



33 



to the body dissimilar to the rest of the wing, which 

 is membranous, as is also the lower wing. 



Fig. 32. — Wheat and Grass Bugs and i^upa, inaymtied and nat. size. 

 {Hetero^Jtera.) 



Thrips {Thysanoptcra) — fringe-winged — are very 

 small insects, with four narrow wings with fringes 

 round the edges. 



Fig. 33 — Thrips and wingless larva, nat. size and niagniliuJ. 

 (Tlryannoptera.) 



The three remaining orders are those of Dragon 

 Flies {NeuropUra), Caddis Flies {Trichoptera), and 



