19 



Length to apex of abdomen 1 1 mill., expense of tegniina 30 

 mill. 



Hab. Fiji, Rewa. (M). 



The colouring, venation and opercula separate this from any 

 Cicadetta known to me. It has an additional peculiarity in that 

 the membranal appendix to tegmina and wings is oi the slightest 

 possible description, being visible onlv where the cells in meeting 

 apically are very slightly notched. 



Cercopidae. 



The nymphs have, in all the forms T have seen, spineless and 

 bristleless legs. 



Since my first memoir, I have acquired a copv of Westwood's 

 "Notice of a tube-making Homopterous insect from Ceylon" 

 (Tr. E. S. London 1886 pp. 329-33,.. PI. VIII), from which the 

 systematic position of the remarkable Machacrofa is recogniz- 

 able. It is evidently closely allied to Polychacfophycs and Pcctin- 

 ariophycs. I cannot recollect the exact appearance of Hindola, 

 of which I have now no specimens for reference. This is the 

 same as the preoccupied Carystus of Stal, and I do not think 

 that the Swedish author would have placed Carystus and 

 Machacrofa in different subfamilies if the former had been the 

 same as Polychacfophycs. I cannot recognize Stal's subfamilies, 

 the characters he uses to differentiate the 'Cercopinae' from the 

 'Aphrophorinae' being to me of little value for that purpose. 

 Two subfamilies are here accepted, and are separable as follows: 



1 Subcostal vein of wing forked about the middle (or basal 



of that), so that there is a "supernumerary" cell. [PI. i, 



fig. 4]. Nymphs, so far as known, living in their own 



frothv secretion Cercopinae. 



2 Subcostal vein not forked, so that there is no supernumerarv 



cell; veins united near the apical margin. [PI. I, fij^'. 5]. 

 Nvmj)hs forming calcareous cases Machacrofinac- 



Cercopinae. 



The Australian and Fijian genera arc disposable as follows, 

 more for convenience than as an expression of their relation- 

 ships: 



I Anterior margin of pronotum rounded (2) 



