Miller. — The Dipt era Fauna of New Zealand. 331 



beneath ; cheeks and occiput blackish-grey, the former bearded with grey 

 hairs ; proboscis and palpi black. 



Dorsum of thorax clothed with a brownish pile which is silvery in some 

 lights ; blackish-brown with four broad greyish stripes and a narrow medio- 

 longitudinal one anteriorly (fig. 81) ; a brownish area with golden hairs 

 extending from wing-articulation over alar regions ; pleurae greenish-black 

 and clothed as dorsum ; spiracles tawny ; an orange spot beneath root of 

 wings ; scutellum tawny, darker basally, and clothed with brownish hairs. 

 Wings faintly tinged, veins blackish-brown, the stigma pale brown ; squamae 

 translucent, greyish, margined with brown, and fringed with brownish hairs 

 arranged as in preceding species ; halteres reddish-brown. Legs clothed 

 with greyish hairs ; femora blackish-brown but fulvous distally ; posterior 

 femora broadened and with short spines below distally ; tibiae fulvous, 

 the anterior and posterior darker distally and with short hairs on lower 

 side giving a golden reflection ; tarsi brownish-black, but with a greyish 

 reflection above and golden beneath. 



Abdomen broad, ovate, and clothed with short silvery hairs which 

 lengthen along the sides to form a distinct fringe ; vestiture arranged in 

 areas on 2nd, 3rd, and 4th segments giving an indistinctly spotted appear- 

 ance as shown in fig. 83 (the areas in the $ are larger). All the segments 

 brilliant bronzy-green with duller and indistinct blackish markings between 

 the areas of hair. 



$. Front brownish with a narrow transverse blackish band from 

 angles of orbits (fig. 68). Antennae varying in intensity of colour, the 

 marginal black of 3rd joint sometimes absent. Abdomen duller bronzy- 

 green, the areas of vestiture more distinctly white though narrower than 

 those of $. 



cJ. Length, 1 1 mm. $. Length, 12 mm. 



Holotype : $, Hutton's collection, Canterbury Museum ; $, No. 1079, 

 D. M. 



Habitat. — Campbell Islands (Hutton) and throughout New Zealand. 



H. chathamensis Hutton. 



H. chathamensis Hutton, Trans. N.Z. Inst., vol. 33, p. 39 (1901). 



This species has not so far been found in New Zealand ; Hutton's four 

 specimens were captured on the Chatham Islands and preserved in spirit ; 

 there are two females, one of which is the holotype, and two males. 

 There is a rather close resemblance between chathamensis and campbellicus, 

 though they differ distinctly in the colour of the abdomen ; but whether 

 the action of the preservative has had any effect on the colour of the 

 former species it is difficult to say. 



The distinguishing features of chathamensis are the following : — 

 $. Front blackish-brown, the lower half with a distinct yellowish- 

 grey reflection ; face (fig. 85) clothed on each side with yellowish hairs 

 and greyish-yellow tomentum ; the protuberance and oral margin shiny 

 black ; proboscis and palpi brownish. Thorax, scutellum, wings, and 

 legs as campbellicus, but the tarsi black and the posterior femora not as 

 broad ; halteres pale -brown. Abdomen bronzy, clothed more or less with 

 tawny hairs ; the " dead-black patches in the middle of each segment " 

 mentioned by Hutton are, when present, very indistinct. The abdomen 

 is narrower than that of campellicus. 



