CLASS V. IN3ECTA. 229 



This species is considerably smaller than C.fossarum, back black, 

 sides yellow. 

 Sp. 6. Cor. dorsalix. Thorax with six transverse black lines on the mar- 

 gin: elytra black and s|)ottal, the anterior margin immaculate. 

 C. dorsalis. Leach, Trans Linn. Soc. xii. 



Ratlier larger than C. stagnutis. Back yellow. 



b. Thorax and elytra smooth and sinning. 



Sp. 7. Cor. Geo[f'roi/i. Yellow: thorax with mmierous transverse black 

 lines: elytra black with minute spots : back wholly black : apex yel- 

 lowish. 



La Corise. Geoff'. Hist. Nat. dcs Insect, i. P. 478. pi. 9. fig. 7. Sigara 

 striata. Panz. Faun. Ins. Germ. Ins. 50. 23. Corixa Geoiiroyi. Leach. 



Length of the body half an inch. 



Inhabits stagnant waters, and is very common. 



" All authors have considered this species as Notonecta striata of 

 Linne, although it will not agree with his character. It is figured 

 by Geotfroy and Panzer, and is of the former author the species serv- 

 ing as the type of the genus Corixa." 



Sp. 8. Cor. uffinis. Yellow: thorax with numerous transverse black 

 lines: elytra black with minute dots: back wholly black, sides deu- 

 tated and yellow. 



Cor, afiinis. Leach, Trans. Linn. Soc. xii. 



liihabits ponds near Plymouth, but is rare. But half the size of C. C^o/- 

 J'roi/i. 



Order VIIL OMOPTERA. Leach. 



Order Hemiptera. Linn., Cuvier, Laynurck. 



Class Rhyngota. Tabr. 



Order Hemiptera. Sections'. Homoptera. Latr. 

 Characters of the Order. 



Rostrum attached to the inferior part of the head j elytra coriaceous or 

 membranaceous throughout; suture straight: thoiYix composed of 

 two segments, the second as long or longer than the first: ocelli three. 

 Metamorphosis semicomplete, or incomplete. 



Fam. L CiCADiADi. Leach. 

 Cicadarij: I. Latreille, 



Antenna' composed of six distinct joints : ocelli or little eyes three : tarsi 

 with three joints. 



Germs 293. CICADA, Lamarck, Geoff"., Linn., De Geer, Lair. 

 Tettigonia. Labr. . 

 Thighs of the anterior feet thick, dentate. 



Sp. 1, ? (PA 5. fig. 2. natural size.) 



The only species known to inhabit this covmtry was lately disco- 

 vered by Mr. Daniel Bydder, near the New Forest in Hampshire, 



