CLASS V. INSECTA. 
231 
Sp. 1. Cer. sanguinolenta. Black, shining; each wing-case with a spot, 
at the base, one in the middle, and a flexuous band at the apex blood 
red. (Pi. 5. fg. 1.) 
Cicada sanguinolenta. Linn. Cercopis sanguinolenta. Fair., Leach. 
Inhabits France, Germany, and England in the woods of Kent. 
Genus 299. LEDRA. Fabr., Latr., Leach. Cicada. Linn., Geoff. 
Membracis. Oliv., Lamarck, Schrank. 
Antenna: inserted in the frontlet, the two first joints nearly equally 
long; the third elongate-conic : thorax dilated behind into an auricle. 
Sp. 1. Led. auruta , 
Inhabits the oak and various trees in woods. 
Genus 300. MEMBRACIS. Latr., Fair., Leach. Cicada. Linn. 
Antennas inserted in the frontlet; the two first joints nearly equal]) 
long, the third elongate-conic : thorax dilated behind. 
Sp. l. Mem. cornutus. Brownish. 
Cicada comuta. Linn. Membracis cornuta. Latr., Leach. 
Inhabits woods and hedges. 
Stiri's 4. — Antenna inserted between the eyes; thorax transverse, 
hinder margin straight. 
Genus 301. IASSUS. Fair., Leach. Tettioonia, Lair., Otto., 
Lamarck. 
Front broad, not longer than broad, on each side above the insertion ol 
the antenna; produced into an angle. 
Sp. 1. lass. Lanio. Fabr. 
Inhabits England and other parts of Europe. 
Genus 302. TETTIOONIA. Oliv., Lamarck. Cicada. Linn., 
Fair., Latr., Leach. 
Front elongate-quadrate, the apex truncate, convex, thickened. 
Sp. 1. Tet. viridis. 
Inhabits moist places, 
Fam. III. Tsyi.ii d v . Latreillc, Leach. 
Tarsi with two joints distinct : antenna: with ten or eleven joints, the 
last with two setae: tegs formed for leaping. Both sexes with wings. 
Genus 303. PSYLLA. Geoff., Oliv., Lam., Latr., Leach. Ckermls. 
Linn., Be Geer, Fabr. 
Antenna filiform or slightly setaceous, as long as the body : thorax with 
the anterior margin arcuate. 
Sp. i. p s y, Jini. Green-yellowish; anterior segment of the thorax, 
squamula of the elytra, and nervures, green. 
Chermes Betulse Alni. Linn. Chernies Aim. Fabr. Psylla Aim. Latr., 
Leach. 
Inhabits the alder. 
