204 Mr. W. L. Distant on Homoptera. 



of head and base of cruciform elevation ; 

 opercula in male reaching base of fust 

 abdominal segment ; rostrum reaching 



intermediate coxae Diemenia. 



ee. Tegnnna about three times as long as 

 broad ; abdomen about as long as space 

 between apex of head and base of cruci- 

 form elevation ; opercula in male not 

 reaching base of abdomen ; rostrum 



passing intermediate coxse Koranna. 



ccc. Head with front strongly projecting, 

 broader than the length of vertical margins, 



which are subangulate Abagazara. 



bb. Tegraiua little more than twice longer than 

 greatest breadth. 

 b^. Costal margin of tegmina above radial area 



neither curved nor gibbous Gudanga. 



b^. Costal margin 06 tegmina above radial area 

 more or less curved and gibbous. 

 /. Head with front not prominently produced, 

 margins of front and vertex continuous. 

 g. Tegmina with the first and second ulnar 

 areas naiTOw, very much longer than 

 broad ; basal cell broader at base than 

 apex, not twice as long as broad .... Masupha. 

 ff. Head with front prominently produced, 

 margins of front and vertex discon- 

 tinuous. 

 gg. Tegmina with the first and second ulnar 

 areas broad, onlj' moderately longer 

 than broad, placed somewhat obliquely 

 to each other ; basal cell about twice 

 as long as broad Platypedia. 



B. "VVings with five apical areas. 



h. Ocelli well separated from lase of head. 



i. Tegmina with postcostal area narrow, but 

 distinct. 

 k. Head with the margins of front and vertex 

 more or less continuous, front not promi- 

 nently^ projecting Taipinga. 



kJc. Head with front prominently projecting, the 

 margins of front and vertex discontinuous 



and at right angles to each other Adenia. 



ii. Tegmina with postcostal area not distinct .... Calyria. 

 Hi. Tegmina witli postcostal area very broad and 



cell-like Parnisa. 



hh. Ocelli placed close to base of head Callipsaltria. 



C. Wings with four apical areas. 



/. Head with front not prominently produced ; mar- 

 gins of front and vertex more or less continuous. 3fapondera. 



II. Head with front prominently triangularly pro- 

 duced ; margins of front and vertex discon- 

 tinuous, somewhat at right angles to each other. Pnmasis. 



