Hutton. — On the Diptera brachycera of New Zealand. 79 



border of the front bristly ; anterior border of the mouth with 

 strong, usually numerous, vibrissas " (Loew). 



Genus Cordylura, Fallen (1819). 



FroDt broad ; face vertical ; antennae not reaching the 

 epistome ; the third joint linear, longer than the second, 

 somewhat truncated at the tip ; arista plumose or nearly 

 bare. Legs stout, bristly. Abdomen in the male linear and 

 thickened at the tip, in the female fusiform. 



Cordylura debilis, sp. nov. 



Vertex reddish -brown, the face yellow ; antennae and pro- 

 boscis piceous. Thorax reddish-brown, with a grey band on 

 each side. Abdomen and legs brown, the femora dusted 

 with grey. "Wings slightly tinged with brown ; the veins 

 dark-brown; the two cross -veins margined with fuscous, 

 which is more distinct when viewed obliquely. The chief 

 cross-vein lies outside the end of the first longitudinal ; the 

 distance between the two cross-veins is about one and 

 three-quarter times the length of the posterior cross-vein, 

 which lies at a distance of about one and a half times its 

 own length from the mai'gin of the wing. Length, 5 mm. ; 

 wing, 4 mm. 



Hab. Christchurch (H. Clark, F. W. H.). 



The antennae do not reach the epistome ; the third joint is 

 oblong, and about twice the length of the second. The arista 

 is short and minutely pubescent. The abdomen is about as 

 long as the head and thorax ; linear and thickened at the end 

 in the male, elliptical in the female. 



Family PHYCODKOMIM}. 



"Thorax, scutellum, and abdomen flat; pleurae excised 

 above the coxae. Front bristly ; border of the mouth hairy, 

 with no distinct vibrissae. Legs stout; tibiae with spurs, and 

 each with an erect hair, or small bristle, on the outside before 

 the tip ; the first joint of the posterior tarsi not abbreviated ; 

 last joint of all the tarsi enlarged, with stout claws and long 

 pulvilli. Neuration of the wings complete ; auxiliary vein 

 distinct in its whole length ; costa without bristles ; basal 

 cells not small " (Loew). 



Genus Coslopa, Meigen (1830). 



Face short, very concave. Antennae very short ; the third 

 joint nearly round, not longer than the second ; arista bare or 

 pubescent. Legs hairy, the tibiae slightly curved. 



