240 GRAMMAR OF ENTOMOLOGY. 



furnished with two appendages which meet like 

 forceps ; nocturnal insects, feeding on vegetables. 

 Forficula, Labia, Labidura. 



788. Crickets (Achelites). Antennas very long, 

 slender, and composed of many joints ; fore wings 

 short, coriaceous, one partially covering the other, 

 not used in flight; hind wings folded longitu- 

 dinally, and projecting beyond the fore wings ; 

 hind legs incrassated, formed for leaping ; tarsi 

 three-jointed : nocturnal, subterranean insects, 

 feeding on vegetables. Gryllotalpa, Acheta. 



789. Grasshoppers (Gryllites). Antennae very 

 long, slender, and composed of many joints ; fore 

 wings coriaceous, as long as the hind wings, which 

 are folded longitudinally beneath them ; hind legs 

 incrassated, formed for leaping; tarsi four-jointed; 

 female furnished with an exserted oviduct : diurnal ; 

 feed on vegetables. Gryllus. 



790. Locusts (Locustites). Antenna short, 

 incrassated towards the middle or extremity, 

 consisting of about ten joints ; fore wings coria- 

 ceous, generally as long as the hind wings, which 

 are folded longitudinally beneath them ; hind legs 

 incrassated, formed for leaping ; tarsi five-jointed ; 

 diurnal : feed on vegetables. Locusta, Gompho- 

 cerus, Acrydium. 



791. Spectres (Spectrites). Antennae short, 

 stout, composed of few joints ; fore wings coria- 

 ceous, small, short, often wanting, never covering 

 the hind wings, not used in flying ; hind wings 



