BY ARTHUR WHITE. 275 



1913. 



5. Thorax with oue broad median stripe ; posterior thoracic 

 bristles white. graminis, Sp. nov. 



Thorax with two median stripes; posterior thoracic bristles 

 black. 



Scutellar bristles, and hairs fringing first abdominal serj- 

 meiit, bhick. brtmneus, Sp. no^". 



Scutellar bristles, and hairs fringing first abdominal seg- 

 ment, yellow. mistipes, Macq. 



Of these species N. mistipes occurs in South Australia, 

 N. maciilatus in Western Australia, N. hyalipennis in Victoria 

 and Tasmania, and N. f rater fius^ caltginostis, ftavicineius^ 

 vulgaius, grajiiims, and brtimieus in Tasmania. 



An additional species, N. plankeps, was described by 

 Schiner, the locality being given as "Australia," but its 

 position is doubtful, and it may not be identifiable. N.varius 

 and N. bulbiis are New Zealand species, and, therefore, are 

 not included in the foregoing table, but Miss Ricardo is of 

 opinion that N. ravins may be identical with N. fraternus. I 

 might mention that although N. fraternus was described by 

 Macquart from Tasmania, I have not so far met with any 

 species that agjrees with his description. 



The Australian species belonging to this genus seem to be 

 confined to the southern half of the continent ; they appear 

 to reach their maximum development in Tasmania. 



Neot'tiWins Jtavicifictus, Sp. nov. 



Thorax black with yellow stripes ; abdomen black, with 

 segmentations yellow, more distinct in female than in the 

 male ; legs jet-black ; posterior tibiae and first joint of 

 posterior tarsi with short, thick, ruddy pubescence on their 

 inner sides; wings tinged wi^h brown, darker towards the 

 tips. 



Length. Male, lo'o mm,; female (including ovipositor), 

 15 mm. 



Locality. Bagdad Valley, Tasniunia. 



Male. Face covered with golden tomentum ; front black ; 

 moustache large and bushy, black. Antennae black; first 

 two joints with black bristles, the third scarcely longer than 

 the first and second together. Thorax with two black median 

 stripes, divided by a thin yelloAv line, and bordered out- 

 wardly with yellow ; sides of dorsum broadly black, bordered 

 with yellow below; scutellum yellowish, with numerous long, 

 marginal, black and yellow hairs. Abdomen black, with 

 segmentations yellow, and yellow hairs and pubescence; 

 genitalia large and prominent with black pubescence. Legs 

 jet-black, with abundant black bristles, hairs, and pubescence ; 



