708 



ENTOMOLOGY. 



Order VI. ORTHOPTERA. 

 Order Orthoptera. Oliv. Lam Latr. 

 Class Ulonata. Fabr. 

 Order Hemiptera. Linn. 



Characters of the Order. 

 Elytra coriaceous, the internal margin of one over- 

 lapping the same margin of the other. Wings mem- 

 branaceous, the anterior margin coriaceous, longitudi- 

 nally folded. Palpi short. Body elongate, narrow. Tarsi 

 with four or three, very rarely with five joints. 



Tribe I. Mantides. 

 Elytra and wings horizontal ; the latter simply longi- 

 tudinally folded. Tarsi five-jointed. Body somewhat 

 cylindric or linear. Feet not formed for leaping. 



Family I. Phasmida. 



Anterior feet not raptorious. Thorax composed of two 

 segments. 



Genus CCCXLVI. Piiasma. Licht. Fabr. Latr. 

 Leach. 



Mantis. Linn. De Geer, Oliv. 



Spectrum. Stoll. Lam. 



Body cylindric, filiform, winged. Thorax cylindric, 

 second segment much longer than the first. Feet simple. 



Sfi. 1. Violascens. Green, with the external edge of 

 the elytra yellowish ; the wings, with the exception of 

 the coriaceous margin, violet ; the four hinder thighs 

 spiny beneath. 



Phasma violascens. Leach, Zoolog. Misccl. vol. i. p. 26. 

 tab. 9. 



Inhabits New Holland. 



Genus CCCXLVII. Spectrum. Stoll. Lam. Leach. 



Piiasma. Fabricius, Latreillc. 



Body cylindric, filiform, without wings. Feet simple. 



Sfi. 1. Kossium. Body green, or ash-coloured brown, 

 somewhat obsoletely granulated, with a dorsal cannula; 

 feet filiform, angulate-striate; thighs towards their joints 

 beneath with one tooth. 



Phasma rossia. Fabricius, Latreillc. 



Inhabits Italy and the southern parts of France. 



Genus CCCXLVIII. Phyllium. Illiger, Latreille. 



Mantis. Linn. Fabr. Oliv. 



Phasma. Lich. Lam. 



Spectrum. Stoll. 



Body oblong, very much depressed, with elytra and 

 wings. Abdomen oval or elliptic membranaceous. 



Sfi. 1. Siccifolium. Bright green. 



Mantis siccifolia. Lin. Fabr. Donovan, JVat. Hist, of 

 the Insects of India, No. 8. fig. 3. 



Inhabits the Molucca Isles. 



Family II. Mantidu. 



Anterior feet raptorious. Thorax composed of one 

 ment. 



Genus CCCXLIX. Empusa. Illig. Latr. 



Mantis. Linn. Fabr. Oliv. Stoll. Lam. Lich. 



Antennae of the male pectinated. Head produced into 

 a horn. Four hinder feet having their knees adorned 

 with leaf- processes. 



Sfi. 1. Mendka. 



Mantis mendka. Fabr. Latr. Stoll. Mant. tab. 1 2. fig. 47. 



Genus CCCL. Mantis. Linn. Latr. Fabr. Oliv. Lam. 

 Lich. Latr. Stoll. 



Antennae in both sexes simple. Head without an horn. 

 Legs all simple. 



Sfi. 1 . Religiosa. Pale green, somewhat linear ; thorax 

 half the length of the elytra, three times longer than 

 broad. Back, with the exception of the anterior part, 

 longitudinally carinated. Lateral margins yellowish, den- 

 ticulated. Elytra linear, glaucous transparent green, the 

 exterior margin yellowish. Wings of the same colour 

 with the elytra, but paler and more transparent, the tips 

 brownish. Anterior legs with denticulated coxae. Ante- 

 rior thighs yellowish within, denticulated at the base be- 

 neath; the spines with black tips. 



Mantis religiosa. Linn. Latr. 



I.e Mante. Geoffroy. 



Mantis oratoria var /3. Fabricius. 



Gryllus religiosus. Scopoli. 



Inhabits the commons and wastes of southern Eu- 

 rope. 



Tribe II. Aciietides. 

 Elytra horizontal. Wings longitudinally folded, often 

 produced beyond the elytra. Tarsi three-jointed. Hinder 

 feet formed for jumping. 



Family I. Gryllotal/iida. 



Antennae not longer than the thorax. Anterior feet 

 compressed, formed for digging. Oviduct not exserted. 



Genus CCCLI. Gryllotalpa. Ray, Latreille. 



Gryllus (Acheta.) Linn. 



Ac h eta. Fabr. 



Antennae setaceous, composed of a vast number of 

 joints, (beyond sixty.) Anterior tibiae and tarsi formed 

 for digging; two first joints of the tarsi very large, den- 

 tiform. Hinder feet little formed for jumping. 



Sfi. 1. Vulgaris. Above fuscous, ferruginous-yellow- 

 ish beneath ; anterior tibiae quadridentate ; wings twice 

 the length of the elytra. 



Gryllus gryllotalpa. Linn. 



Acheta gryllotaljia. Fabricius. 



Gryllotalfia vulgaris. Latreille. 



Inhabits Europe. The male sings in the evening by 

 rubbing the elytra together. 



Sfi. 2. Didactyla. Anterior tibiae bidentate. 



Inhabits Cayenne. 



This species has been confounded with G. Vulgaris in 

 several cabinets. 



Genus CCCLII. Tridactylus. Olivier, Latr. 



Acheta. Coquebert. 



Antennae monilifbrm, (very short), ten-jointed. An- 

 terior tibiae with their joints only spinous. Hinder feet 

 well calculated for leaping. 



Sfi. 1. Paradoxus. Paleluteous; thorax pale fuscous, 

 the sides pale luteous; elytra half the length of the ab- 

 domen, blown, hyaline externally with white tips; wings 

 a little longer than the abdomen, with their base white, 

 then pale brown, transversely striated. 



Inhabits Guinea. It is the Acheta digitala of Coque- 

 bert, tab. 21. fig. 3. 



Family II. Achetida. 



Feet not formed for digging. Oviduct exserted. An- 

 tennae longer than the thorax. 



Genus CCCLIII. Acheta. Fabr. 



Gryllus. Linn. Geoff. Latr. Oliv. Lam. 



Sfi. 1. Cam/wslris. Body three times longer thai. 

 broad, black, shining. 



Grylhis ca?nfieslris. Linn. Latr. 



Acheta camfiestris. Fabricius. 



Inhabits the temperate parts of Europe. Is not very 

 common in Britain. 



