﻿38o 



The following synonymy will elucidate this: 

 Genus i. Cercopis Fabricius 1775, Latreille, etc. ^ 



=Aphrophora Germar, 1818. 



type Cicada spnmaria Linn., Latr., ^Cicada alni Fallen. 

 Genus 2, Philacniis Stal 1864. 



^Cercopis Kirkaldy 1901. 



type Cicada IciicopIitJialiiia, Linn., =spui!iaria graminis 

 DeGeer, ^^spuiiiaria of most later authors. 

 It may be noted here that authors refer constantly to Aphrop- 

 hora salicis DeiGeer. There is no sudh species; DeGeer describ- 

 ed a form as Cicada spiunaria salicis, an inadmissible term, and 

 the species s'hould be known as Cercopis rustica Fabricius. 



There are 3 conventional subfamilies as follows: 

 (i). Rhinaulacinae (=:Cercopinae of some authors) with about 



25 genera. 

 (2). Cercopinae (^^i^p'hrophorinae of some autliors) w'ith 



about 36 genera, and 

 (3). Maciiaerotinae, with 2 genera. 



(Of Embolonia Provancher 1889, I have not seen the descrip- 

 tion and it is not mentioned by Goding or Ball.) These sub- 

 families are separable as follows: 



1. Anterior mar'gin of pronotum straight RJiirauIaciiiae. 



la. Anterior margin of pronotum rounded or angulate 2. 



2. Scutellum flat, triangular Ccrccpv.ae. 



2a. Scutelhim strongly elevated, armed witb a long apical spine. 



MachacroHne. 



But as noted above, this is la classification of convenience. 



Subfam. Rhinaulacinae. 

 Euryatdax, gen. nov. 



General appearance of Phymatostctha Stal. Vertex decrvous, 

 flat, longitudinally sulcate exterior to the ocelli, the sulci be'ng 

 psrallel and the space between being about equal to that be- 

 tween a sulcus and the nearest eye; the middle lobe is divided 

 by a transverse sulcus into two parts, the anterior being about 

 half the length of the posterior (*). 



The vertex is also narrowly, transversely impressed close to 

 the posterior margin. The entire anterior (dorsal) margm of the 

 head is strongly, acutely, carinate. The frons is pitted at its ba?e 

 and is strongly swollen, transversely striate, somewhat deep- 



*It is possible that this middle lobe of the vertex is really a dorsal part of the frons. 



