GLASS V. INSECTA. 2l7 



tlie male arc somewhat larger than that of the female, which charac- 

 ter Mr. Marsham has considered as specific. 



Genus 260. LABIDURA. Leach. 

 AntcDiue with ahout thirty joints. 



Sp. 1. Labid. g'lgantcu. Entirely testaceous yellow. 



]"orticida gigantea. Fabr. 



Inliahits Europe. It was discovered to inhabit Britain by the Rev. Wil- 

 liam Bingley, who observed them on the sea-coast under stones near 

 Clnistchurch, Hampshire, where they occurred in great abundLmce. 



Order V. ORTIIOPTERA. Leach. 



Order Ortiioptera. Oliv., Lam., LmIi-. 



Class Ulonata. Fabr. > 



Order HcMirxERA. Linnc. 



Characlcrs of the Order. 



Flytra coriaceous, the internal margin of one overlapping the same 

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

 riaceous, longitudinally folded: palpi short: bodtj elongate, narrow; 

 tarsi with three or tour \ery rarely with five joints. 



Fam. I. AcHETiD.E. Leach. 

 Gkyllides. Latrei/k. 



E/i/tra horizontal: zvings longitudinally folded, often produced beyond 

 the elytra: tarsi three-jointed: hinde r feel i'onned for jumping. 



Stirps 1. — AntenntE pot longer than the thorax: anterior feet com- 

 pressed, formed for digging : oviduct not exserted. 



Genus 261. GRYLLOTALPA. E«y, Latr., Leach. 

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

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

 tarsi very large, dentiform: hinder J'eet little formed for jumping. 

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



anterior tibia quadridentate : zcings twice the length of the elytra. 

 Gryllus Gryllotalpa. Linn. Acheta Gryllotalpa. Fabr. Gryllotalpa vul- 

 garis. Latr., Leach. 

 Ijihabits 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 whole beds of cabbages, young 

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

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

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

 for a long time without interruption. About the begimiing of May 



