560 



INSECTS. HEMIPTERA. 60. Gryllus. 



Migratorius Thorax fubcarinate, of a fingle fegment : mandibles blue. 



Donov.Eng Inf. viii. tab. 270. Naturalises Mifcell.W. tab. 62. 



Inhabits Tartary and migrates in incredible fwarms into various 

 parts of Europe. Themifchief theie voracious creatures do, when 

 they appear in vaft legions, far exceeds the calamities occafion- 

 edbyany other tribe of animals. By iuddenly deftroying all 

 vegitation, they change the moll fertile provinces into bar- 

 ren deferts, leaving behind them defolation and famine and 

 difeafes. They have occafionally appeared in fmall flights in 

 England, but have perifhed in a fhort time. This was probab- 

 ly the fpices which constituted one of the Plagues of Egypt. 

 Numbers. Chap. x. 



Body brownifh varied with darker fpots : legs blue : hind-thighs 

 and foanks yellowifli. 



Ruficcrnu* 



Linejla. 



Thorax black on the back with a yellow keel : antennae and 

 fhanks yellow. 

 Inhabits Sierra Leona : a little lefs than the laft. 

 Antennae reddifh : beadpale varied with brown : wing- cafes va- 

 ried with brown and cinereous. 



Thorax fubcarinate, brown with a rufous dorfalline : hin- 

 thighs fanguineous within : fhanks bluafh. 



Inhabits Italy; fize of G. migratorius. 



Head grooved brown : thorax of 3 fegments .- nving-cafes grey : 

 wings white reticulate with brown : hind-thighs with a fangui- 

 neous line within : fiianks biue with white fpines, the tip 

 black. 



Vane gat us. 



Thorax with yellow lines : wing-cafes green : win£s 

 blue. 



Inhabits America, Herbfl. Arch. 8. tab. 53. fig. 3. 

 Antennae black with red rings: front red with black fpots. 



Vccav Thorax carinate : wing-cafes pale with ocellar brown fpots: 

 wings ferruginous at the bafe. 

 Inhabits Neiv Ho/land. 



Head pale teftaeeous : mandibles black : fiemmata 3, 2 gold ones 

 above the antennae and another in the middle of the lront : 

 thorax ferruginous, the edge yellowifli : iving-cafes rounded. 



Kervofus* Greenifh; thorax black on the back with a yellow line: 



wing-cafes greenifh, with a yellowifli or greenifh fub- 



marginal nerve. 

 Inhabits Guinea. Lefs than G. migratorius. 

 Antenna; (hort, yellow or ferruginous : head greenifh, grooved 



each fide : hind-fhanhs with white teeth ferruginous at the 



tip. 



Lurid us. 



