Hutton. — On the Diptera brachycera of New Zealand. 37 



Wings with the marginal cell open ; the submarginal peiiform. 

 The males are smaller than the females. 



Key to the Species. 



Abdomen black, with white spots . . . . . . H. cingulatus. 



Abdomen black, with yellowish-red spots. 

 Second segment only with yellow spots. 



Yellow spots about hilf the depth of the 



segment . . . . . . . . H. trilineatm. 



Yellow spots nearly the whole depth of the 



segment . . . . . . .. H. vicinus. 



Seoond and third segments with yellow spots . . H. antipodus. 



Abdomen bronzy. 



Antenna; black . . . . . . .. H. ineptus. 



Antennae red, with a blaok border . . .. H. chathamensis. 



Abdomen blue . . . . . • • • . . H. latifrons. 



Section A. 



All the abdominal segments with close short hairs. No 

 tooth on the hind tibiae. 



Helophilus cingulatus. 



Syrphus cingulatus, Fabricius, Syst. Ent., p. 767 (1775). 

 Eristalis cingulatus, Hutton, Cat. Dipt. N.Z., p. 40; Hud- 

 son, Man. N.Z. Ent., p. 57, pi. vii., fig. 2. 



Front rather narrow, the sides parallel ; forehead dark- 

 chestnut, with a transverse chevron of reddish-white and some 

 white at the base of the epistome ; antennas, epistome, and 

 peristome dark-chestnut ; third joint of the antennae rather 

 broader than long, the style naked. Thorax black, with 

 reddish-black tomentum ; scapulae ferruginous ; a pair of nar- 

 row longitudinal white lines on the dorsum, and a pair on 

 each side, the latter with a sharp re-entering angle in the 

 middle. Scutellum shining, dark-chestnut. Abdomen black, 

 the greater part thickly covered with short hairs. At the base 

 there is a band of long yellowish-white hairs, which are shorter 

 in the middle ; second segment with a broad transverse white 

 band interrupted in the middle ; third and fourth segments 

 with four small round white spots, the outer pair on the 

 fourth segment, with a tuft of white hairs. Outside the inner 

 pair of spots on the third and fourth segments is a polished 

 space without any hairs. Wings hyaline, the veins black ; 

 submarginal cell closed, but not petiolate. Legs hairy, black ; 

 the knees inside of the fore and middle tibiae and the 

 whole of the tarsi ferruginous. Length, 14-15 mm. ; wing, 

 12-13 mm. 



Bab. Wellington (Hudson) ; Picton, Christchurch, and 

 Dunedin (F. W. H.). Rare. 



