Hutton. — On the Diptera brachycera of New Zealand. 81 



obconical in the female. A humeral bristle is always 

 present. 



The two following species have the head and eyes nearly 

 round ; the second joint of the antennae is short and conical, 

 the third is oval and considerably longer than the second ; 

 the arista is minutely pubescent. The costa of the wing is 

 setigerous from the centre of the costal cell nearly to the tip, 

 but there are no bristles on any of the longitudinal veins. 

 The middle tibiae have strong spurs, but they are small or 

 absent on the hind tibiae. 



Key to the Species. 



Distance between the cross-veins one and a balf times the 



length of the posterior .. .. .. .. H. scutcllata . 



Distance between the cross-veins two and a half times the 



length of the posterior . . . . . . H. hudsoni. 



Helomyza scutellata, sp. nov. 



Head and antennae dark-brown ; the face tawny, with 

 grey tomentum. Abdomen dark-brown. Legs pale-tawny. 

 Wings brownish; veins tawny; the cross-veins bordered with 

 fuscous. The chief cross-vein lies considerably outside the 

 end of the first longitudinal ; the distance between the two 

 cross-veins is about one and a half times the length of the 

 posterior cross- vein, and the posterior cross- vein lies at a dis- 

 tance of two-thirds of its own length from the margin of the 

 wing. Length, 5 mm. ; wing, 5 mm. 



Male. — Thorax and scutellum pale-brown above, the sides 

 dark reddish-brown, with a longitudinal white band to the 

 base of the wings ; tawny below. 



Female. — Thorax brown, darker on the sides ; lower sur- 

 face, and a band on each side meeting at the apex of the scu- 

 tellum, pale-yellow. 



Bab. Wellington (G. V. Hudson). 



The third joint of the antennae is broadly oval, about three 

 times the length of the second. The setae on the costa are 

 short, and easily overlooked. 



Helomyza hudsoni, sp. nov. 



Front testaceous, the ocellar triangle brown ; face yel- 

 lowish-white ; antennae dark-ferruginous. Thorax reddish- 

 brown, indistinctly banded, the sides with a yellowish-white 

 band. x\bdomen and legs tawny. Wings brownish, the chief 

 cross-vein broadly and the posterior cross-vein narrowly bor- 

 dered with brown. Length, 5 mm. ; wing, 5 mm. 



Hab. Wellington (Hudson); Christchurch (F. W. H.). 



The first longitudinal vein is short, the chief cross-vein 

 lying just outside its end ; auxiliary vein closely approximated 

 to the first longitudinal for the greater part of its length, but 

 6 



