io8 



6 Veins basal of the membrane dark 3 asaica 



6a V^eins basal of the membrane pale, with dark granules. . (7) 1 



7 Head and scutellum pale 4 talunia , 



7a Head and scutellum black and castaneous 5 lilinoc 



8 Vertex much narrower at the base than an eye (9} 



8a Vertex scarcely, or not, narrower at the base than an eye 



'. • (10) 



9 Lateral margins of vertex forked at the anterior margin of , 



the eyes, so that the anterolateral margins of vertex do 

 not reach the apical margin and are connected therewith 



by 2 very short, parallel, keels 6 tasmani 



9a Lateral margins of vertex forked well below the anterior 

 margins of the eyes, the inner margins meeting acutely 

 below the anterior margin of the head dorsal 1\- and con- 

 tinuing thereto 7 aJexanor 



10 Tegminal veins granulate 9 sponsa 



10a Tegminal veins not granulate 1 1 



11 Tegminal cross veins thickened, but not witlely suffused.. 



9 liihra 



iia Tegminal cross veins strongly and widely suffused 



10 plwiia^ 



5. lilijwi' sp. nov. 



Like a large, dark taliniia, but the venation is dilterent. Differs 

 from O. laertcs by the veins of the tegmen basal of the mem- 

 brane being pale (with dark granules), not dark, consequently 

 the dark hue of the suffused cross veins shows up more promi- 

 nenth' : also by the greater length of the axillar\- vein. It is 

 cillied to O. asaica, but is much smaller, the tegmina are paler 

 and the vertex is much narrower. Frons and clypeus dark fus- 

 cous, median keel and lateral margins pale ochraceous. Scutel- 

 lum dark fuscous; the median keel, the lateral keels and the space 

 between them, and tlie extreme lateral margins ferruginous. 



Length 5^14 mill 



Mall. Oueensland. Cairns (July, P.). 



6. tasmani sp. nov. 



Allied to 0. aJcxanor, but the head form is different and the 

 tegminal granules feebler. Blackish, keels dark ferruginous, 



* Distant lias refentlv doscrihed two species, O. (liiiifhaiiii .-ind < i. hihin I'loiii 

 Queensland (I;t07 .\. M. X.H. (7) XIX, iHi>), but it is not possil)lf to idiiilil'y tin ni fn.iu 

 the descriptions. N. B. Sinee tlie above was in proof. Distant lias reniiiiud his \\hihi-<i. 

 'Uucerta," an excellent name judging by his description. 



