82. 

 ACRIDA BINGLEII. 



Order Orthoptera. Fam. Gryllidae Leach. Locustavias Lat. 



Type of the Genus Gryllus viridissimus Linn. 

 AcRiDA Kirbij. Conocephalus Leach. Locusta Fab., S^c. Gryllus Linn. 

 Antenna as long as the body, setaceous, inserted close to the in- 

 ternal margin of the eyes, composed of innumerable small joints, 

 irregular in their length, basal joint dilated, 2nd short, 3rd rather 

 longer, attenuated (f. 1). 



Labrum membranaceous, orbicular, dilated at the base (2). 

 Mandibles short, trigonate, internal edge sinuated, in some long, 

 acute, and dentated (3). 



MaxillcE slender, internal lobe horny, bifid, with a 3rd tooth be- 

 low the apex, external lobe membranaceous, obtuse, with a few 

 short hairs. Falpi 5-jointed, 1st joint very short, 2nd short, the 

 following long clavate, terminal joint the longest, truncate (4). 

 Mentum narrowed anteriorly (5 b). Palpi hairy, 3 -join ted ; 

 1st joint short, 2nd longer cylindric, 3rd long, clavate, trun- 

 cate (c). Lip bipartite orbicular, each lobe having a palpiform 

 process on the internal edge (a). 

 Head short, vertical, sometimes acuminate. Thorax convex, com,- 

 pressed, fiat above, lobed behind. Abdomen short, thick. Ovipo- 

 sitor long, straight, or recurved. Elytra and Wings deflexed, the 

 males having a transparent cell at the base of the elytra (9 a), in 

 some with rudiments only of elytra, in others entirely wanting. An- 

 terior legs short, posterior pair very long, formed for leaping. Tibiae 

 serrated, posterior with several strong spines at the apex. Tarsi 

 4-jointed, the penultimate joint bilobed, the 1st joint having a lobe 

 on each side near the base in the posterior pair (8 apex of tibia and 

 tarsus of hind leg.) 

 Obs. The dissections are taken from L. grisea F., that species being 

 nearest allied to A. Bingleii. The elytron of the male is from the 

 latter species. 



Bingleii Dale's MSS. 



Ma/e brown, tinged with green. Head rounded, pale and dull 

 green. Thorax of the same colour, slightly carinated, dilated 

 behind. Abdomen piceous, edges of the segments pale. Elytra 

 pale fuscous, tinged with green, spotted with brown, the cen- 

 tral spots the largest, interior margin green towards the base. 

 Wings transparent greenish at their base. Legs griseous-yellow ; 

 posterior thighs green at their base, variegated with brown. 

 Female dull and pale ochraceous, variegated with brown. Ab- 

 domen pale down the back ; piceous on the sides with irregular 

 pale margins to the segments. Ovipositor slightly recurved, 

 brown with a rosy tinge. 



In the Cabinets of Mr. Dale and Mr. Haworth. 



