375 



I. borcalis Coding. 



D. borcalis Coding op. c. 9, pi. i, f. 21 (tegmen). 



Hab : Queensland, Cairns (viii). xVelson (viii), Knranda (viii) 

 arboreal. 



The venation is variable, even in t'lie tegmina of the same in- 

 dividual; t'he third subapical cell is sometimes divided, and 

 there may be also two or more small supplementary cells. 



Sextius Stal. 



Sextius Stal 1866 Hem. Afr. IV, 88. 



A genus of 'greenish forms, wit'h the apical parts of the teg- 

 mina reticulate. The males are as a rule smaller, and the pro- 

 notal horns less developed. All t'he species are FMcalyptus- 

 feeders. 



The following species are all, I think, good, but dilHcult to 

 define verbally. The following key mav help to their identifica- 

 tion: 



1. No basal cross vein (sec. Coding) dcprcssiis Coding. 



la. A basal cross vein 2. 



2. Pronotum more or less swollen near the anterior mar- 

 gin kurandae, sp. nov. 



(2a). Pronotum anteriorly practically flat medianly 3. 



(3). Posterior process extending beyond tegmina 



louginofum sp. nov. 



(3a). Posterior process not extending as far as apex of teg- 

 mina hipunctaia (Fabr). 



(4a). Tegmina immaculate 5. 



(5). Horns feebly developed hipunctaia vars. 



(5a). Horns well developed 6. 



(6). Horns and pronotum between them dark, pronotum 

 anteriorly pale, tegmina sparsely marked with black. . 

 assiniilis sp. nov. 



(6a). Horns and pronotum anterioily dark, tegmina imma- 

 culate vircscens (Fairm.) 



N. B. Scxfiiis vircscens Buckton 228, PI. 31, f. 3, is impos- 

 sible to determine, being probably a mixed species. 



I. depressus Coding. 



S. depressus Coding 12. PI. i. f. 24 (nymph). 



Recorded from Queensland. West Australia, and several local- 



