58 CICADID.E. 



Subfamily I. CICADINtE. 



Cicadinee, Dist. Mon. Orient. Cicad. ^. 3 (1889). 



This subfamily, recognized by the complete covering of the 

 tympanal orifices by the tympanal flaps, has a world-wide distri- 

 bution, but is more strongly represented in the Eastern than in 

 the AVestern Hemisphere ; it is also in the first that the genera 

 containing the most gigantic species occur, illustrated in this 

 fauna by Cri/ptoti/uqxma, Platylomia, and Pomponia. These genera 

 are not found in the Ethiopian Region, and it is only in Madagascar 

 M'here a similar development in size and colour occurs ; with the 

 exception of this island, the Oriental and Malayan Eegions may 

 be accepted as the headquarters of the Cicadinse. 



Division POLYNEURARIA. 

 Polyneiiraria, Dist. A. M. N. H. (7) xiv, p. 293 (1904). 



Lateral margins of the pronotum ampliated, and more or less 

 angularly produced. Head (including eyes) about as wide or 

 wider than base of mesonotum, or sometimes little more than 

 two-thirds of its width ; costal membrane of tegmina sometimes 

 much arched and dilated, the apical areas usually eight in number, 

 but in a few genera smaller in size and much more numerous ; 

 tegmina varying in hue from pale hyaline to dark opaque. 



Synopsis of Genera. 



A. Tegmina with eight apical areas. 



a. Head (including eyes) about as wide or 



wider than base of mesonotum ; not 

 frontally produced, more or less truncate 

 and deflected in front of eyes ; costal meu> 

 brane of tegmina not prominently dilated 

 nor arched at base Platypleuba, p. 58. 



b. Head (including eyes) only about or little 



more than two-thirds the width of base 

 of mesonotum ; costal membrane of 

 tegmina prominently arched at base and 

 dilated Pycxa, p. 71. 



B. Tegmina with numerous, always more than 



eight apical areas. 

 a. Tegmina semihyaline, only more or less 

 reticulately veined on apical area ; opercula 



not quite reaching middle of abdomen . . Angamiana, p. 72. 

 Tegmina opaque ; venation on apical half 

 dense and furcate ; opercula not extending 

 beyond basal segment Polyneura, p. 73. 



Genus PLATYPLEURA. 



Platypleura, Amy. Sj- Serv. Hem. p. 465 (1843) ; Stdl, Hem. Afr. iv, 

 pp. 2 & 9 (1800) ; Atkins. J. A. S. Beng. iv, p. 144 (1860) ; Dist. 

 Mon. Orient. Cicad. p. 19 (1889). 



Subgen. Oxypleura, Amy. Sf Serv. Hem. p. 409 (1843). 



