22 Mr. W. L. Distant on Ilomoptc 



X.—Bhijuchotal yoies.—X.X^\U. By W. L. Distant. 



Fam. Cicadida3 (continued from vol. xv. p. 486). 



Subfam. Tibicintna:: (continued). 



Division TiBiClNARlA. 



In this division the abdomen is more or less cylindrical and 

 attenuated posteriorly ; anal appendages usually very pro- 

 longed and prominent, their lower plate, as a rule, more 

 longly porrect than their upper one ; pronotum generally 

 n'.ore or less distinctly narrowed anteriorly * ; tegmina some- 

 what talc-like and obscurely wrirdvled, their greatest breadth 

 always more than one third of their length, both tegmina and 

 wings always prominently sanguineous or reddish ochraceous 

 at base. 



Tiie genera in this division are of a very homogeneous 

 character and possess a common facies. 



Synopsis of Genera. 



A. Pronotum about as long as head. 



a. Head (iucludiug eyes) about as broad as base of 

 mesonotum. 

 h. Head (including eyes) as Lroad or broader than 

 length of mesonotum (including cruciform eleva- 

 tion). 



c. Front of head shorter than vertex Tihicina. 



aa. Head (including eyes) considerably narrower than 

 base of mesonotum. 

 M. Head (including eyes) equal or almost equal in 

 breadth to length of mesonotum (including cruci- 

 form elevation). 

 cc. Front of head shorter than vertex, its apex more 

 or less emarginate. 

 d. Basal cell of tegmina about or almost twice as 



long as broad Okanagana. 



ccc. Front of head almost as long as vertex, its apex 

 not emarginate. 

 dd. Basal cell of tegmina but little longer than 



broad T Ahimuina. 



B. Pronotum much longer than broad Fuluiria. 



Genus TiBlCINA. 



Tibicina, Amyot, Ann. Soc. Ent. Fr. 1847, pp. lo4 ^S: 350. 



Tj'pe, T. /icematodes, Scop. {Cicada). 



* Except in Tibicina scptenuJecim, a species which possesses several 

 aberrant characters. 



