164 Miss G. Ricavdo — A Revision of 



Ommatius lema, Walker. 



Type ( $ ) from New South Wales (Haslar Hospital). 



A blackish species ; the tibiae dull yellowish red on their 

 outer borders, femora incrassate. Moustache yellow. Wings 

 pale brownish. 



Length 18 mm. 



Face blackish, with grey tomentum. Moustache com- 

 posed of long yellowish hairs and about seven long black 

 bristles, four above the oral opening and three near antennae. 

 Palpi brown, with long whitish hairs. Beard yellowish. 

 AntenncE black. Thorax black, with grey tomentum on 

 shoulders and at sides, and as faint stripes on dorsum ; two 

 short black bristles above root of wings and two beyond, 

 and numerous weaker ones on posterior part of dorsum. 

 Scutellum with two black ones on its border. Abdometi 

 blackish, a few black hairs at anus. Legs black ; coxae 

 covered with grey tomentum ; fore tibiae obscurely reddish, 

 the others only yellowish red on their outer borders ; poste- 

 rior and middle femora armed below with four black bristles ; 

 fore femora with whitish pubescence below. Wings pale 

 brownish, nearly clear on posterior border, the small trans- 

 verse vein placed on the apical third of discal cell ; fourth 

 posterior cell with a short stalk. 



The type from which this description is taken is in a dirty 

 faded condition. It is distinguished from O. angustiventris 

 by the incrassate femora, armed with four, not two, bristles, 

 and by the less highly coloured tibiae. 



Ommatius dimidiatus, Macquart. 



Type apparently lost; not to be found in the Paris 

 Museum. 



A female in the Brit. Mus. Coll. from N. Queensland is 

 probably nearly allied to this species. 



Macquart describes it as follows : — ■ 



Black. Legs red, femora above and the tibiae below black. 

 Length 4 lines, ? . 



Palpi with black hairs. Face shining black, with a little 

 grey tomentum ; moustache composed of black and yellowish 

 bristles. Antennae black. Thorax with indistinct grey 

 stripes. Abdomen with slight gi-ey tomentum. Tarsi black ; 

 the first joint yellow, black at apex. Wings clear, the discal 

 cell with a long stalk. 



From Tasmania. Paris Museum. 



Ommatius vitiicrus, ? , Bigot. 

 Described as dull brown. Face, beard, and moustache 



