FAM. MEMBRACID^: igS 



b. Posferior process slender, simple 



c. Suprahumerals robust, strongly oblique Platybelus Stal. 



cc. Suprahumerals slender, horisontal Evanchon Goding. 



bb. Poslerior process heavy, swollen or laminate 



c. Posterior process nodose Amitrochates Distant. 



cc. Posterior process not nodose Barsumas Distant. 



B. Posterior process angulate at base 



1. Suprahumerals contiguous or united at hase Monocentrus Melichar. 



2. Suprahumerals distant between bases 



a. Posterior process ampliate heneath Maguva Melichar. 



aa. Posterior process not ampliate beneath 



b. Suprahumerals truncate at tips .Anchon Buckton. 



bb. Suprahumerals acute Spalirises Distant. 



II. Base of poslerior process impinging on scutellum 



A . Posterior process laminate 



1 . Posterior process with high dorsal node 



a. Suprahumerals toothed Pantaleon Distant. 



aa. Suprahumerals simple Antialcidas Distant. 



2. Posterior process without high dorsal node 



a. Suprahumerals cornute Maurya Distant. 



aa. Suprahumerals auriculate Mach.erotypus Uhler. 



B. Posterior process not laminate 



1 . Hind trochanters armed internally with teeth 



a. Apical veins of t^gmina straight Tricentrus Stal. 



aa. Apical veins of tegmina curved Tricentroides Distant. 



2. Hind trochanters unarmed 



a. Suprahiimerals contiguous or united at their hases Eumonocentrus Schmidt. 



aa. Suprahumerals not contiguous or united Crito Distant. 



186. GENUS CENTROTUS Fabricius 



Centrotus Fabricius, Syst. Rhyng. i8 (i8o3). 



Beaufortiana Distant, Rhynch. Notes 3o (1916). 



Paratrioentrus Kato, Trans. Nat. Hist. Soc. Formosa XVIII : gS. ii5 (1928). 



Characters : The type species of this genus was one of the first membracids ever to be 

 described and since it was one of the coinmonest, and one of the few members of the family found in 

 Europe, it consequently must have been very famihar to the early entomologists. As a result, it vvould 

 seem that any nevv species which bore even a superficial resemblance to C. cornutus was placed in this 

 genus, only to be removed later to some other genus when the family became more and more subdivided. 

 Nevertheless, it is lather surprising to note that the bibUograph}' of the genus shows a total of 



