BY ARTHUR WHITE. 93 



3 Wings with four distinct brown spots. 



Maculatus, White. 



Wings without any sign of spots except in X. 

 cdliyinusu^, in which small indistinct spots are 

 sometimes visible. 4 



4 Scutellum with four marginal bristles. 5 



Scuteilum with two marginal bristles. 6 



5. Scutellar bristles usually yellow, but sometimes 



black ; large species with elongated ovipositor. 



Hyalipenxis, Ricar<ln. 



Scutellar bristles black; verj' small species, 

 with a less elongated ovipositor. 



DiVARICATUS. Sp. 7tOV. 



6. Wingr, with thj second posterior cell conspicu- 



ously contracted at a short distance from the 

 wing margin ; anterior tibise blackish ; oviposi- 

 tor with the terminal lamellje unusually 

 short. AsniTus, White. 



Wings with the second posterior cell broad, and 



not contracted. 7 



7. Bristles of abdomen white; moustache of female 



largely black. Vulgatus, White. 



Bristles of abdomen black ; moustache of female 

 almost entirely white ; wings usually suffused 

 ^vith brown at apex of second basal cell, at an- 

 terior cross-vein, and at base of cubital fork. 



Calicinosus, White. 



The above species occur as follows: — 



T. Jiricht'i ... New South Wales, Victoria. 



X. fJnvirinftu.% ... Tasmania. 



X. nmrulatust ... Western Australia. 



X. hfiaJi pennis ... Tasmania, Victoria. 



X. (livaricatiis ... New South Wales. 



X. ahditui ... Tasmania. 



X. ruhfatu'i ... New South Wales, Tasmania. 



X. r(ifif/inii.iii>i ... New South Wales, Tasmania. 



Neoitamus lividus, Sp. nov. 

 Thorax black with an indistinct single or double cen- 

 tre stripe ; abdomen shining blue-black, with short, hind- 

 marginal black bristles; femora black, tibire dark brown, 

 with whit? and black bristles ; wings hyaline with very dis- 

 tinct black veins ; the anterior cross-vein situated well 



