Hutton. — On the Diptera brachycera of New Zealand. 91 



the exterior side there is either a very small or no erect bristle 

 before the tip. Wings without bristles on the costa ; the first 

 longitudinal vein much abbreviated ; the auxiliary vein rudi- 

 mentary ; the discal cell usually, but not in all genera, united 

 with the foremost of the two basal cells. Claws and pul villi 

 very small " (Loew). 



Genus Drosophila, Fallen (1820). 



Head and thorax convex, with a few bristles. iVntennae 

 short, the third joint nearly linear ; arista with five or six 

 long hairs on each side. Abdomen linear in the male, ellip- 

 tical in the female. 



Key to the Species. 

 Thorax tawny, unspotted . . . . . . D. brouni. 



Thorax tawny, spotted with brown . . . . D. marmoria. 



Thorax dark- brown .. .. .. .. .. D. clarkii. 



Drosophila brouni, sp. now 



Tawny, the under-surface and legs paler, yellowish ; eyes 

 and antennae darker, brown. Abdomen dark-brown above, 

 tawny below. Wings nearly colourless, the veins dark-brown; 

 chief cross-vein opposite the end of the first longitudinal ; 

 distance between the cross-veins about two and a half times 

 the length of the posterior cross-vein ; the distance of the latter 

 from the margin of the wing is about equal to its own length. 

 Length, 3 mm. ; wing, 3 mm. 



Hab. Auckland (H. Suter). 



The arista has about ten long hairs. 



Drosophila marmoria, sp. nov. 



Head and thorax tawny mottled with dark-brown; abdomen 

 dark-brown. Halteres and legs pale-yellow, fuscous on the 

 outer side of the femora and tibiae. Wings colourless ; the 

 chief cross-vein lies rather outside the end of the first longi- 

 tudinal ; the distance between the cross-veins is two and a 

 half times the length of the posterior cross-vein ; the distance 

 of the latter from the margin of the wing is about equal to its 

 own length. Length, 3 mm. ; wing, 3 mm. 



Hab. Auckland (H. Suter). 



The arista has about eight long hairs. 



Drosophila clarkii, sp. nov. 

 Eather dark-brown ; the lower surface and the legs pale- 

 tawny ; antennae dark-brown. Wings clear, the veins piceous. 

 The chief cross-vein lies a little outside the end of the first 

 longitudinal ; the distance between the cross-veins is about 

 three times the length of the posterior cross-vein ; and the 

 distance of the posterior cross-vein from the margin of the 



