Hutton. — On the Diptera brachycera of New Zealand. 15 



antennae black, and the face greyish-white, except the naked 

 portion between the eyes. The thorax and scutellum are 

 covered with grey dust, the former with three black bands. 

 The grey posterior margins of the abdominal segments are 

 very apparent, and in the middle they run forwards in a 

 point, forming a triangle, which is largest on the second 

 segment. In other respects it agrees with the description of 

 the type. Length, 9 mm. ; wing, 9mm. 



Hab. Wellington (Hudson). 



The antennae are inserted rather below the middle line of 

 the head. The first joint of the antennae is thick, slightly 

 oval, and hairy. The ocelli are absent. The outline of the 

 abdomen is slightly oval. 



Genus Pangonia, Latreille (1806). 



Proboscis long, extending much further than the palpi. 

 Third joint of the antennae with seven or eight divisions, the 

 first joint short. Eyes hairy or naked. Ocelli present, some- 

 times indistinct. Posterior tibiae with well-developed spurs. 

 Wings with the fourth posterior cell open, the first either open 

 or closed. Eyes contiguous in the male, separated in the 



female. 



Key to the Species. 



Abdomen bluish-black . . . . . . ..P. adrel. 



Abdomen brown, tawny at the sides. 



Antenrae tawny, blackish at the tip . . . . P. lerda. 



Antennae blackisb. 



Sides of the thorax with tawny hairs . . . . P. hirticeps. 



Sides of the thorax with white bairs . . . . P. ricardoi. 



Abdomen altogether brown .. .. .. .. P.montana. 



Sub-genus Erephrosis, Rondani. 

 First posterior cells closed ; eyes hairy. 



Pangonia adrel. 



P. adrel, Walker, Insecta Saundersiana, Dipt., i., p. 16 

 (1850) ; Hutton, Cat. Dipt. N.Z., p. 22. Erephrosis adrel, 

 Ricardo, Ann. Mag. Nat. Hist., ser. 7, vol. 5, p. 115 

 (1900). 



Thorax black. Abdomen bluish-black, shining. The pos- 

 terior angles of the thorax and the abdomen with tufts of 

 pale brownish-yellow hairs. Legs black. Length, 13 mm.; 

 wing, 15 mm. 



Hab. Auckland (Captain Broun) ; Taranaki (Clark). 

 Of our four female specimens, the first posterior cell is 

 closed in one and open in three. I have not seen the male ; 

 Miss Eicardo says that in it the sides of the two first seg- 

 ments of the abdomen are fulvous. 



