302 Transactions. 



orbits broadly yellow, clue to a pubescence which extends over the facial 

 orbits ; antennae orange-red, 3rd joint oval with a black upper edge ; 

 arista reddish-black ; a tawny spot above the root of each antenna. Face 

 slightly concave between antennae and knob ; blue-black, but golden- 

 pruinose on each side of knob and upwards beneath antennae ; clothed 

 also with short and scattered golden hairs ; mouth-parts brownish-yellow ; 

 occiput depressed, black but yellow -pruinose and shortly haired along 

 orbits. 



Thorax brilliant cupreous ; humeri tawny but whitish in some lights ; 

 alar angles to wings tawny ; a narrow pale-yellow stripe from humeri to 

 wings ; halteres tawny. Wings large, with a tawny tinge except basally ; 

 stigma orange-red, veins brown ; nodule of vena spuria connected by a 

 cross-vein with vein R 4 + n (fig. 23). Legs tawny, the anterior tibiae and 

 posterior protarsi very slightly thickened. 



Abdomen elongate-quadrangular, the sides almost parallel ; brownish - 

 yellow with indistinct and irregular blackish markings. 



$. Length, 11 mm. 



Holotype: No. 1201, D. M. 



Habitat. — Okakune (J. K. Harris) ; Karori (G. V. Hudson). 



S. flavofaciens n. sp. 



$ . A medium-sized dark-blue elongate fly with no abdominal markings 

 but with a yellow spot on each side of thorax. 



Eyes bare, somewhat approximated on vertex ; front shiny dark-blue, 

 clothed with short brownish hairs ; two crescentic incisions on lunular 

 area behind roots of antennae, which are brown in colour but darker basally ; 

 3rd joint ovate ; arista black. Face (fig. 24) tawny with a greyish-yellow 

 tomentum and a median shiny blue-black stripe which is continued broadly 

 along oral margin over the cheeks and produced upward at a point to facial 

 orbits anterior to cheeks ; posterior angle of oral cavity tawny on each side 

 and beneath ; occiput blue-black, posterior orbits with short silvery hairs ; 

 proboscis and palpi blue-black, the labella tawny. 



Thorax shiny blue-black, clothed with short black hairs ; a tawny area 

 on the meso- and ptero-pleurae ; scutellum blue-black with a bronzy tinge 

 and tawny apex. Legs brownish-black, the femora testaceous basally ; 

 anterior legs somewhat lighter in colour. Wings clear or slightly tinged 

 with brown ; stigma brown, veins brownish-yellow ; squamae and anti- 

 squamae white ; halteres brownish-yellow. 



Abdomen elongate, shiny deep-blue, slightly narrowing at base, and 

 clothed along sides with short and delicate whitish hairs ; genital segments 

 brownish. 



$. Length, 7 mm. 



Holotype : No. 525, D. M. 



Habitat. — Wallacetown (A. Philpott) ; Dunedin (W. G. Howes). 



S. hudsoni n. sp.* 



A medium-sized fly with yellow spots on the abdomen. 



cj. Eyes bare, narrowly dichoptic, angulated half-way down the front, 

 where there is a transverse groove, posterior to which the front is narrow 

 and bronzy but anteriorly widens and is tawny on each side of a narrow 



* Named after Mr. G. V. Hudson, of Karori. 



