436 CLASS VIIT. 



b) Ocelli two. 

 Tettigonia LATE., Cicada FABR. 



* With ocelli on vertex. 



Sub-genera : Cercopis FABR. in part, Aplirophora GERM., Clastoptera, 

 GERM., Tettigonia GERM., BURM., Euacanthus GERM., Ledra FABR., 

 Ledropsis WHITE, Penthimca GERM., Gypona GERM., XeropKlwa, 



GERM. 1 



Sp. Cercopis spwnaria FABB., Aplirophora spumaria GERM., Cic. spuinnri<i 

 L., BXESEL, Ins. n. Locust. Tab. xxin. f. i 4 ; the larva and nymph 

 live in a white froth (vulg. cuckoo-spit) found in spring-time on different 

 plants, especially on willow-trees. 



Tettigonia viridis, Cicada viridis L., &c. 

 ** With ocelli in the margin of frons. 



Jassus FABR, (Add sub-genera Ccdidia, Paropia, JEupelia, Aco- 

 cephalus, Bythoscopus GERM.) 



ft) Posterior tibiae unarmed. 



Ulopa FALL., GERM. Head broad, with eyes somewhat pro- 

 minent. 



jEihalia GERM., BURM. (Italian LATR.) Head deflected an- 

 teriorly. 



Sp. JZthalia reticulata, Cicada reticulata L., DE GEEE, Ins. in. PL 33, 

 figs. 15, 1 6, LATEEILLE in HUMBOLDT et BONPLAND, Observ. de Zool. 

 et d'Anat. comp. I. PI. 24, figs. \i t 13. Habit, in South America; forms 

 the transition to the following section. 



B) Prothorax produced posteriorly above the abdomen, often 

 covering the scutellum, in some the wings also. Head deflected, 

 with frons inferior ; ocelli two in vertex. 



Menibracis LATR. (Centrotus, Meinbracis [Ranatra LESSON 2 ], 

 Darnis FABR.). 



Add sub-genera ; Lamproptera GERM., Bocydium LATR., and 

 several others, on which comp. BURMEISTER, 1.1. u. pp. 127, &c. and 

 AMYOT et SERVILLE, Neur. pp. 532 553. 



1 Besides these, many other genera have been added by AMYOT et SERVILLE, 

 Hist. nat. des Ins. hemipt. which from our limited space we cannot record. 



2 This name was given long before to a genus of the water-bugs (Nepa Unearth. 



