CLASS V. INSECTA. 231 



Sp. 1. Cer. mnguiiiolenta. Black, shining; each wing-case with a spot 

 at the base, one in the middle, and a flexuous band at the apex blood 

 red. {PL 5. fg. 1.) 



Cicada sanguiuolenta. Linn. Cercopis sanguinolenta. Fabr., Leach. 



Inhabits France, Germany, and England in the woods of Kent. 



Genus 299. LEDRA. Fair., Latr., Leach. Cicada. Lhin.^ Geoff. 

 Membracis. 0/i»., Lamarck, Schrank. 

 AnteniKB inserted- in the frontlet, the two first joints nearly equally 

 long; the third elongate-conic ; thorax dilated behind into an auricle. 

 Sp. 1. I^d. aurata. 

 Inhabits the oak and various trees in woods. 



Genus 300. MEMBRACIS. Latr., Fahr., Leach. Cicada. Linn. 

 AntenncE inserted in the frontlet ; the two first joints nearly equally 



long, the third elongate-conic : thorax dilated behind. 

 Sp. 1. Mem. cornutus. Brownish. 



Cicada cornuta. Linn. Membracis coniuta. Latr., Leach, 

 Inhabits woods and hedges. 



Stuii's 4. — Antcnnte inserted between the eyes: thorax transverse, 

 hinder margin straight. 



Genus 301. lASSUS. Fahr., Leach. Tettigonia. Latr., Oliv., 



Lamarck. 

 Front broad, not longer than broad, on each side above the insertion of 



the antennae produced into an angle. 

 Sp. 1. lass.Lunio. Fabr. 

 Inhabits England and other parts of Europe. 



Genus 30'>. TETTIGONIA. Oliv., Lamarck. Cicada. Linn., 



Fahr., Latr., Leach. 

 Front elongate-quadrate, the apex trvmcate, convex, thickened. 



Sp. 1. Tet. rH)-iilis. 

 Inhabits moist places. 



Fam. III. Psyllid^. Latreille, Leach. 



Tarsi with two joints distinct: antenna; with ten or eleven joints, th^ 

 last with two sets : legs formed for leaping. Both sexes with wings. 



Genus 303. PSYLLA. Geoff., Oliv., Lam., Latr., Leach. Chermes. 

 Linn., De Geer, Fabr. 

 Antenna: filiform or slightly setaceous, as long as the body: thorax with 



the anterior margin arcuate. 

 Sp. 1. Ps)/l. Alni. Green-yellowish; anterior segment of the thorax, 



squamula of the elytra, and nervures, green. 

 Chermes Betulte Alni. LiJin. Chermes Alni. Fabr. Psylla Alni. Latr,, 



Leach. 

 lohabits the alder. 



