136 Mr. Westwood on the Family Fulgoridse. 



nean and Fabrician Fulgorce, including the well-known Chinese species Ful- 

 gora Candelaria, the European Fulgora europoea, &c. were placed in the 

 genus Flata. The character, however, upon which this separation was 

 founded cannot be maintained, since in F. Candelaria and its allies the sepa- 

 ration between the forehead and the clypeus is strongly marked, and even in 

 F. tenebrosa the line of separation may be clearly perceived. 



M. Gu^rin in his description of the insects collected in the " Voyage de 

 Belanger," gave another classification of the family, consisting of seventeen 

 genera ; amongst which Flata and its allies are separated from Fulgora and 

 its allies, by the size of the prothorax, which is much narrower than the meso- 

 thorax, and deeply notched behind ; whereas in the latter the prothorax is 

 " presque aussi large que le mesothorax, et tr^s peu ^chancre en arri^re." 

 This last section consists of the following genera, thus tabularized : 



Second joint of the r Forehead prolonged into a rostrum . . Fulgora. 



antennae globose. 1 Forehead not prolonged Eumallia. 



{Phenax, Germar.) 



{Forehead longitudinal Aphoena. 

 {Aphana, Uurm.) 

 Forehead transverse Lystra. 



By this arrangement, the character derived from the produced anterior 

 part of the head is made secondary to that of the form of the antennae ; and 

 consequently we find that some of the species of Aphana, {A. discolor, A. 

 fuscata, Gu6r., A. nigro-maculata, Gray,) have the head produced into a re- 

 curved horn, as is also the case with Fulgora recurva, which ought also to be 

 considered, according to this arrangement, as an Aphana. Burmeister has, 

 however, given another arrangement of these allied genera, which in some 

 degree alters the limits of the genus Fulgora, and which is as follows : 



a. Front of the head not rostrated. 



§ Second joint of the antennae elongate-ovate. 



Forehead broader than long Poeocera. 



Forehead longer than broad or quadrate . . . Aphana. 

 § Second joint of antennae globular. 



Forehead without elevated central carinae . . . Lystra. 



