GENERA AND SPECIES. 193 



and a transverse spot on the forehead ochreous : thorax and 

 scutellum piceous, the former with 2 ferruginous spots at the base : 

 abdomen variegated with fuscous : superior wings fuscous between 

 the nervures, especially towards the apex, leaving 2 large pearly 

 spots on the costa, (Length 2^ lines.) 



The type of our genus is th^ Cicada viridis, Linn. The 

 above species (which I have named in honour of the learned 

 Professor Germar,) as well as tire C. interruptus, differ in 

 some measure, in having the crown of the head slightly ex- 

 cavated. 



'^ Gen. 1055. — Agallia. Curt. 



Rather short and ovate : face ovate-trigonate : clypeus narrow : 

 head from above forming a very narrow lunule : ocelli 2 in the fore- 

 head : antennae triarticulate setiform : rostrum neither short nor 

 stout, attenuated : thorax narrower than the head, transverse- 

 ovate : scutellum triangular ; wings very much deflexed, superior, 

 with the costa considerably rounded, the interior margin nearly 

 straight, the nervures reticulated towards the apex : anterior legs 

 short, posterior the longest ; the tibiae spined externally, pecti- 

 nated internally : tarsi triarticulate, basal joint long in the hinder 

 pair. 



^ 2. Consobrina. Curt. 



Pale testaceous : head prettily pencilled with ferruginous, with 2 

 remote black spots at the base : thorax with 4 black dots in a 

 transverse line before, a ferruginous lanceolate line down the 

 centre, and a triangular one on each side : scutellum with 2 trian- 

 gular black spots at the base, and 2 dots in the middle : nervures, 

 and 2 spots on the internal margin brown, the former more or 

 less suffused : posterior tibiae with a line of black dots down the 

 outside. (Length 1| line.) 

 The form of the head and the situation of the ocelli, well 



distinguish this from the foregoing genera. 



I/O Gen. 1057. — Megophthalmus. Curt. 



Somewhat ovate : antennae inserted on each side the middle of the 

 face, as long as the thorax, 1 st and 2d joints stout and ovate, 3d 

 setiform : head, viewed from above, forming a very narrow lunule 

 vnth the anterior edge, forming an elevated margin : face ovate- 

 trigonate, with two elevated oblique lines at the top, forming a 

 transverse X with the margin of the forehead : rostrum rather 

 long, and tongue-shaped : eyes projecting beyond the thorax : 



NO. II. VOL. I. C C 



