Hutton. — On the Diptera braehycera of New Zealand. 87 



Key to the Genera. 

 Third joint of antenna? oval . . . . . . . . Sapromyza. 



Toird joint of antennse linear . . . . . . . . Lauxania. 



Genus Sapromyza, Fallen (1820). 



Head subhemispherical ; face a little inclined backwards ; 

 epistome bare, not projecting. Antennas short, the third joint 

 generally oblong, compressed, the extremity obtuse, the arista 



pubescent. 



Key to the Species. 

 No white streaks on the margin of the eyes . . . . S. dichromata. 



White streaks on the margin of the eyes. 



Coxse and bases of femora yellow . . . . S. sciomyzina. 



Cox* and bases of femora brown . . . . . . S. decora. 



Sapromyza dichromata. 



Sap. dichromata, Walker, Cat. Dipt, in Brit. Mus., p. 988 



(1849) ; Hutton, Cat. Dipt. N.Z., p. 66. 



Tawny, except the abdomen, which is dark - brown. 

 Length, 5-5i mm. 



Hab. Throughout New Zealand. 



The third joint of the antenna} is oval, about twice the 

 length of the second ; arista minutely pubescent. The 

 auxiliary vein is closely approximated to the first longitudinal 

 for about two-thirds of its length. 



Sapromyza sciomyzina. 



Sap. sciomyzina, Schiner, Reise der " Novara," Dipt., p. 278 



(1868) ; Hutton, Cat. Dipt. N.Z., p. 67. 



Head black, margins of the eyes with white streaks ; 

 antennas blackish -brown. Thorax ferruginous. Abdomen 

 black. Legs blackish-brown, the coxae and bases of the 

 femora yellow ; the middle and hinder tarsi light -brown. 

 Wings tinged brownish. Length, 5| mm. 



Hab. Auckland (Voyage of the " Novara "). 



I do not know this species. 



Sapromyza decora. 



Sap. decora, Schiner, Reise der " Novara," Dipt., p. 277 



(1868) ; Hutton, Cat. Dipt. N.Z., p. 67. 



Head brown, front paler with a tawny centre, margins of 

 the eyes with white streaks ; lower face tawny. Thorax 

 brown, with two white streaks. Abdomen dark-brown. Legs 

 brown ; almost the whole of the middle tibiaa and the middle 

 part of the hind tibiae yellowish. Wings slightly tinted with 

 yellow. Length, 4 mm. 



Hab. Auckland (Voyage of the " Novara "). 



I do not know this species. 



