30 POPULAR, ENTOMOLOGY. 



the tip; maxillary palpi long, the last joint hatched-shaped ; legs 

 long ; tarsi five-jointed. 



This Order has but one family Blattida. It is fre- 

 quently comprised in Ortkoptera, 



ORDEB, V. OBTHOPTERA, Olivier. 



Characters. Wings two, folded longitudinally ; elytra coria- 

 ceous, one folding over the margin of the other longitudinally ; 

 mouth with transversely moveable jaws. 



1. Acketidce. Wings and wing-covers held horizontally 



when at rest ; wings of large size, forming long fila- 

 ments extending beyond the body; antennae often 

 longer than the body ; body robust ; eyes large ; body 

 terminated by setae (bristles) ; tarsi slender ; colour 

 generally brown. Locality various, according to the 

 species. 



2. Gryllida. Wings and wing-covers disposed like a 



sloping roof, or deflexed when at rest; antennse very 

 long and slender ; wings very large and delicate ; tarsi 

 broad and fleshy ; size large ; colour generally green. 

 Locality, plants. 



3. Locustida. Wings and wing-covers deflexed; antennae 



