30 POPULAR ENTOMOLOGY. 



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

 long ; tarsi five-jointed. 



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

 quently comprised in Orthojotera. 



Order Y. OETHOPTEEA, Olivier. 



' Characters, — Wings two, folded longitudinally ; elytra coria- 

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

 mouth with transversely moveable jaws. 



1. Achetidcc. — Wings and wing-covers held horizontally 



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

 ments extending beyond the body; antennse often 

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

 terminated by setse (bristles) ; tarsi slender ; colour 

 generally brown. Locality various, according to the 

 species. 



2. GryllidcE. — 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. Locustidce. — Wings and wing-covers deflexed; antennse 



