CLASS V. INSrCTA. 217 



the male arc somewhat larger tlian that of the female, v^hich charac- 

 ter 31 r. Marsham has coiisidcrcd as specific. 

 Genus 2G0. LABIDURA. TAac/i. 



Anienn<e with about tliirtj- joints. 



Sp. 1. Lahid. gigantea. Entirely testaceous yellow. 



I'orficula gigantea. Fair. 



Inhahit'« Europe. It was discovered to inhabit Britain by the Rev. Wil- 

 liam I5ingley, who obscr%ed them on the sea-coast imdcr stones near 

 Chri^tchurcli, Hampshire, where they occurred in great abundaJice. 



Order V. ORTIIOPTERA. Leach. 



Order Oktiioptera. Oliv., Lam., Lair. 

 Class Uloxata. Fair. 

 Order IIcMii'TruA. Linn'c. 



Characters of the Order. 



FJylra coriaceous, the internal margin of one overlapping the same 

 margin of the other: zclngs membranaceous, the anterior margin co- 

 riaceous, longitudinally folded: palpi short: luxli/ elongate, narrow: 

 lur^i with three or fuur very rarely with five joints. 



Fam. I. AchetidjE. Leach. 

 Gryllides. Lutreille. 



Eli/tra horizontal : u-ings longitudinally folded, often produced beyond 

 the elytra: tarsi three-jointed: hinder feetiormcd for jumping. 



Stirps 1. — Antenna not longer than the thorax: anterior J'cct com- 

 pressed, formed for digging : oviduct not exsertcd. 



Genus 261. GRYLLOTALPA. Ray, Latr., I^ach. 



Antcnme setaceous, composed of a vast number of joints (beyond sixty) : 

 anterior tibia and tarsi fonned for digging ; two first joints of the 

 tarsi very large, dentiform : hinder feet little formed for jumping. 



Sp. 1. Gryl. vulgaris. Above fuscous, ferruginous yellowish beneath : 

 anterior tibia quadridentate : icings \^\\cc the length of the elytra. 



Gryllus GrylloUilpa. Linn. AchetaGryllotalpa. Fabr. Gryllutaipa vul- 

 garis. Latr., Leach. 



Inhabits Europe in gardens and cultivated places, especially the sides 

 of ponds and banks of streams : they burrow and work underground 

 like the mole, raising a ridge as they proceed, but seldom throw up 

 hillocks. They sometimes destroy A\hole beds of cabbages, young 

 legumes and flowers. At night they come abroad and make long 

 excursions. In fine weather, about tlie middle of April, and at thr 

 close of day, they begin to utter a low, dull, jarring note, continued 

 iW a long time without interruption. About the beginning of May 



