30 MANDIBULATA. ORTHOPTERA. 



truncate in front, rounded behind, tricarinated, the lateral carinae more or 

 less angulated, the sides considerably and suddenly deflexed ; elytra and 

 wings ample, the former with the costa dilated in the males ; abdomen 

 solid, attenuated to the apex; legs moderate; posterior considerably 

 elongated, their femora robust, compressed and formed for leaping ; tibice 

 slender, spinose; tarsi with a small cushion between the claws. 

 The elongate clavate antennae of the insects of this genus at once 

 point out their distinction from the other genera of this family, espe- 

 cially in the typical species, in which their apex is very considerably 

 expanded and is hollowed out in form of a spoon, with a slight acute 

 point at the end: in the other species this character is less apparent, but 

 abundantly distinct from Locusta and Podisma ; and from Acrydium 

 also, from which its elongate elytra and short thorax — rounded 

 behind — remove it : the species are rather of small size, and appear 

 to frequent dry and sandy heaths. 



Sp. 1. rufus. Plate xxviii. f. 6. — Thorace cruciato, corpore bmmneo-griseo, 

 elytris griseis, abdomine subtus virescente-Jlavo, femoribus posticis subtus 

 tibiisque rufis. (Long.corp.il — 14 lin.) 



Gry. rufus. Linn't. — Donovan, v. xvi. pi. 482. — Go. Sowerbii. Steph. Catal. 

 302. No. 3337. 



Above griseous-brown, sometimes varied with yellowish; head beneath yel- 

 lowish; thorax with a black streak on each side; elytra in the male longer 

 than the abdomen, dilated beyond the middle, immaculate, fuscous, but 

 paler and more transparent on the hinder portion of the dilated costa; in 

 the females nearly as long as the abdomen, and with a few dusky spots 

 towards the hinder margin ; abdomen beneath yellowish, above dusky at 

 the base; legs reddish; anterior tibiae yellowish ; posterior red; posterior 

 femora reddish-brown, red beneath, the base within with a dusky streak ; 

 antenna^ longer in the male than in the female, the apex expanded and 

 spoon-shaped, dusky, with the extreme tip, which is acute, white. 



Slightly variable : in some examples the thorax has a white streak on each 

 side within the black one. 

 Rather a local insect ; found occasionally in abundance in the 



fields near the Red House, Battersea, in July and August. 



Sp. 2. biguttatus. Thorace cruciato ; rufescente-fuscus, albido maculatus, ana 

 rufo, elytris griseis serie longitudinali macularuni fuscarum, lineolaque versus 

 apicem albis. (Long. corp. 6 — 10 lin.) 



Gryl. biguttatus. Charpentier Horce Ent. p. 166. — Gom. biguttulus. Steph. 

 Catal. 302. No. 3339. — Gyl. biguttulus. Donovan, v. iii. pi. 79. f. 2. 



Red-brown, spotted with whitish ; head with a black line behind the eyes ; 

 thorax with the lateral carinae strongly angulated, and whitish, with a black 



