Hutton. — On the Diptera brachycera of New Zealand. 75 



Homalomyia fraxinea, sp. no v. 



Thorax and scutellum pale-grey, the former with some in- 

 distinct dark lines. Abdomen pale-grey, the middle segments 

 with a pair of indistinct dark spots. Legs blackish-grey. 

 Squama? white. Halteres yellow. Wings pellucid, the 

 veins piceous ; distance between the two cross-veins rather 

 more than the length of the posterior cross- vein. Length, 

 5-6 mm. 



Male. — Head and front silvery, except the ocellar triangle, 

 which is grey, and a very narrow black frontal band, which is 

 sometimes absent. 



Female. — Frontal band reddish-brown, broadly margined 

 with grey ; ocellar triangle and face grev. 



Hab. Christchurch (P. W. H.). 



Genus Exsul, gen. nov. 



Eyes slightly hairy. Arista minutely pubescent. Cheeks 

 hairy. Abdomen oblong, unspotted. Squamae and anti- 

 squamae well developed, nearly equal. Wings very broad, 

 the shoulder arched ; third and fourth longitudinals parallel ; 

 the fifth diverging widely, making the posterior cross-vein 

 longer than the distance between it and the chief cross-vein ; 

 sixth longitudinal reaching about two-thirds of the distance 

 between the third basal cell and the margin of the wing ; 

 seventh longitudinal shorter than the sixth. The chief cross- 

 vein lies inside the end of the first longitudinal. 



A very remarkable genus, very different in appearance 

 from any other fly, but clearly belonging to the Anthomyidce. 



Exsul singularis, sp. nov. 



Frontal band black; the face greyish- white ; antennae 

 piceous. Thorax dark-grey, with two distinct black longi- 

 tudinal stripes, and two indistinct ones inside them. Abdo- 

 men dark-grey, the sides and apex with scattered, long, 

 fulvous hairs. Legs jet-black. Halteres brownish. Squamas 

 nearly white. Wings dark-brown, with pale spots in the sub- 

 costal, anterior, and posterior basal cells, and a deep pale 

 indentation at the apices of the submarginal and first pos- 

 terior cells. Length, 12 mm. ; length of wing, 13 mm., its 

 breadth 10 mm. 



Hab. Milford Sound (Professor Wall). 



Two specimens of this very remarkable fly were seen, but 

 only one was captured. 



Genus Phorbia, K. Desvoidy (1830). 



" Eyes bare, contiguous or subcontiguous in the males, re- 

 mote in the females. Arista tomentose or bare. Face slightly 



