-Hutton. — On the Diptera brachycera of New Zealand. 17 



proboscis pitch-brown ; the hairs on the lower surface of the 

 head pale-yellow. Thorax brown, with grey lines in the 

 sutures ; a band of black hairs on each side, below which, and 

 on the lower surface, the hairs are white ; a tuft of long white 

 hairs on the posterior angles of the thorax, behind the wings. 

 Abdomen black or blackish-brown ; the two first segments 

 largely and the third slightly margined with tawny (some- 

 times obscure) ; the posterior margins qf the segments tawny 

 and with tawny hairs, a spot of white hairs in the centre of 

 the posterior margin of the first five segments ; hairs on the 

 sides arranged in alternate tufts of black and white. Legs 

 blackish, all the tibiae ferruginous. Wings smoky, darker on 

 the anterior portion ; the veins fuscous. 



The female has the vertex dark-grey, and differs from the 

 male in having white hairs below on the head ; the thorax is 

 less hairy and has no tufts; the abdomen is paler and less 

 hairy. 



Length, $ 12-13 mm., ? 12 mm.; wing, $ 12-14 mm., 

 2 12-13 mm. 



Hab. Christchurch (F. W. H.) ; Ashburton (Smith) ; Wel- 

 lington (Hudson). 



This species differs from the last in being smaller, in the 

 white hairs on the thorax and abdomen, and in the thorax 

 being paler. In all the specimens I have seen the first pos- 

 terior cell is open. The males are not uncommon, but the 

 female is rarely seen. 



Sub-genus Corizoneura, Roth. 

 First posterior cell open ; the eyes naked. 



Pangonia montana, sp. nov. 



Female. — Upper surface uniform blackisk-browa, with 

 thinly scattered short white hairs on the dorsum of the thorax, 

 more abundant and longer on its sides. Head tawny, the 

 vertex darker than the face ; antennae brown at the base, 

 fuscous at the tip ; palpi pale-tawny ; proboscis dark-brown. 

 Lower surface brown. Legs tawny, the tarsi brown. Wings 

 slightly smoky, the veins brown ; the first posterior cell open. 

 Length, 9 mm. ; wing, 8^ mm. 



Hab. Mount Arthur, Nelson (Captain Broun). 



Smaller than the other New Zealand species, and without 

 any tufts of hair on the thorax. The eyes are naked. I have 

 not seen the male. 



Genus Apatolestes, Williston (1885). 

 Third joint of the antennae with seven or eight divisions, 

 and without a tooth. Ocelli present. Proboscis short, 

 scarcely extending beyond the palpi. Hind tibiae with well- 

 developed spurs. Anal cell closed, the anal vein not curved. 

 2 



