INSECTA. 435 
Sp. Aphis rose L., RGAuMOUR, 1.1. Pl. 21, figs. 1-4; DuMérIL, Cons. gén. 
s. 1. Ins. Pl. 39, fig. 3, &e. 
Psylla Grorrr., Latr., Chermes L, (exclusive of Cherm. Abie- 
tis). Antenne with ten joints, the last bisetose. Tarsi with two 
equal joints. Wings deflected, ample, with nerves branched. 
Imagines always winged. 
Leaf-suckers, False leaf-lice, Faux pucerons. The larve are covered 
with a woolly coating, just like leaf-lice. The perfect insect has the 
habitus of a small cicada, the long antenne excepted. Comp. Réaum. Ins. 
in. Mém. x. pp. 351—362; De Guer, Mém. ut. pp. 130—157. Sp. 
Psylla pyri, Chermes pyri L., Ravzesurc, Forst-Insecten, 111. Tab. XI. 
fig. 2, &e. 
Livia Larr., Diraphia Int1c. Antenne short, thick. Head 
anteriorly bifid. 
Sp. Livia juncorum LatR., Dumérin, Cons. gén. 8. l. Ins. Pl. 39, fig. 5; 
GreRMAR, Faun. Ins. Europ. vi. Tab. 21. 
Add sub-genus Livilla CuRTIS, WESTW. 
Family XXXVI. Ctcadarie. Wings four deflected, anterior 
often coriaceous coloured elytra. Tarsi almost always triarticulate, 
in a few biarticulate. Antenne short, with three or seven joints, 
the last setaceous. Females furnished with serrated borer. 
Comp. on this family GermaR, Magaz. der Entomol. Ul. pp. 177—227, 
IV. pp. I—106. 
A. Cicadarie mute. No musical organs. Antenne with three 
joints. Eyes two or none. Tarsi triarticulate. 
Phalanx I. COtcadelle Later. (Cicadellina and Membracina 
Burmeister). Antenne inserted between the eyes. Posterior feet 
saltatory. 
A) Prothorax not produced posteriorly above the abdomen. 
Scutellum distinct. Head horizontal, with frons mostly directed 
forwards. 
+) Posterior tibize spose or serrate. 
a) Ocelli none. 
Typhlocyba GuRMAR. Body elongate. Posterior feet very long. 
Comp. especially HerRicH ScHaFFER, Deutschl. Ins. Heft 164. Small 
insects, leaping, mostly yellow or green. European species numerous, 
amongst which are Cicada Ulmi and Cicada Rose L. 
28—2 
