﻿io8 



6 Veins basal of the membrane dark 3 asaica 



6a Veins basal of the membrane pale, with dark granules. . (7) 



7 Head and scutellum pale 4 talunia 



ya. 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 tasniaiii 



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 dorsally and con- 

 tinuing thereto 7 alcxanor 



10 Tegminal veins granulate 9 sponsa 



loa Tegminal veins not granulate 11 



Ti I'egminal cross veins thickened, but not widely suffused.. 



9 Inhra 



iia Tegminal cross veins strongly and widely suffu-ed 



10 t/ielia'-'- 



5. Uliiioc sp. nov. 



Like a large, dark talunia, but the venation is different. Differs 

 from O. laerfes 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- 

 nently ; also by the greater length of the axillary vein. It is 

 allied to 0. 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 the extreme lateral margins ferruginous. 



Length 534 mill. 



Hab. Queensland. Cairns (July. P.). 



6. tasmani sp. nov. 



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

 tegminal granules feebler. Blackish, keels dark ferruginous, 



* Distant has recently described two species. O. diunkniia and (). hihni from 

 Queensland (1907 A. M. N.H. (7) XTX, 282), but It is not possible to identify tlieni from 

 the descriptions. N. B. Since the above Mas in proof. Distant lias renanie<i his \\li/hra, 

 "(Hcerfrt,"' an excellent name judging by his description. 



