Hutton. — On the Diptera brachycera of New Zealand. 69 



second ; arista pectinated. Fourth longitudinal vein slightly 

 bent ; the first posterior cell widely open. 



Stomoxys calcitrans. 



Musca calcitrans, Fabricius, Sp. Ins., ii., 467, 4. 



Frontal band black ; ocellar triangle and face silvery ; 

 antennae black ; palpi fulvous. Thorax brownish-grey, with 

 four black bands. Abdomen brownish-grey, with two spots 

 on each segment and an interrupted dorsal band dark-brown. 

 Legs dark-brown. Length, 7 mm. 



Hab. Christchurch (F. W. H.). Introduced. 



The male is darker than the female, the wings are brown, 

 and the palpi long. The spots on the abdomen are larger, 

 and the dorsal band is less interrupted in the male than in 

 the female. It is commonly known as the horse-fly. 



Stomoxys aenos. 



Stomoxys cenos, Walker, Cat. Dipt, in Brit. Mus., p. 1160 

 (1849) ; Hutton, Cat. Dipt. N.Z., p. 57. 



Thorax black, with indistinct tawny stripes. Abdomen 

 black, tinged with yellowish-brown, two tawny stripes on the 

 under-side. Legs black. Length, 5 mm. 



Hab. Auckland (Dr. Sinclair). 



I do not know this species. 



Family ANTHOMYIDiE. 



"Thorax with a complete transverse suture. Fourth 

 longitudinal vein straight or nearly so, hence the first pos- 

 terior cell is fully open. Squamae well developed, although in 

 many cases of no large size " (Loew). 



Key to the New Zealand Genera. 



WiDgs dark-brown, nearly as broad as long . . . . Exsul. 



Wings of the ordinary shape and colour. 



Eyes approximated or subcontiguous in the male. 



Eyes hairy ; arista pubescent . . . . Trichophthicus. 



Eyes bare ; arista minutely pubescent or bare. 

 Sixth longitudinal vein reaching the 



margin . . . . . . . . Phorbia. 



Sixth longitudinal not reaching the margin. 



Sixth longitudinal longer than seventh Limnophora. 

 Sixth longitudinal shorter than seventh Homalomyia. 

 Eyes widely separated in both sexes. 



Arista slightly pubescent or bare . . . . Ccenosia. 



Genus Trichophthicus, Eondani (1870). 



" Eyes hairy, and contiguous or subcontiguous in the 

 males. Arista pubescent or bare ; epistome sometimes pro- 

 minent. Squamae moderately developed, with unequal scales. 



