276 DIPTERA OF AUSTRALIA, 



265. Metriocnemus nitidulus, sp.n. (PI. xii., fig. 23). 



Q. — Length of antennse 0*012 inch ... 0-30 millimetre. 



Expanse of wings 0-045 x 0-015 ... 1-13 x 0-38 



Size of body 0-060x0-013 ... 1-54x0-32 



Antennae, head and palpi ochreous. Thorax pale ochreous- 

 brown or almost pale fulvous, levigate, with two longitudinal 

 double rows of short yellowish hairs ; pleurae and pectus ochreous 

 or pale brownish-ochreous ; scutellum pale ochreous ; metanotum 

 greyish-ochreous. Halteres ochreous-yellow. Abdomen about twice 

 the length of thorax, pale faded brown, generally paler between 

 segments, clothed with short yellowish hairs ; lamellsB of ovi- 

 positor short. Legs slender, ochreous or pale brownish-ochreous. 

 Tibial spurs deep brown. In fore legs tibia J longer than meta- 

 tarsus. AVings longer than abdomen, sparingly haired, pellucid, 

 almost hyaline with a brassy reflection ; veins brownish-yellow. 

 Costal extending beyond tip of third longitudinal more than half 

 way to tip of fourth longitudinal ; auxiliary vein very indistinct, 

 reaching costa opposite base of fifth longitudinal fork ; first longi- 

 tudinal vein joining costa much nearer to middle cross-vein than 

 to tip of third longitudinal ; second longitudinal very indistinct, 

 reaching costa opposite middle of anterior branch of fifth longitu- 

 dinal fork ; middle cross-vein and fourth longitudinal pale ; latter 

 not reaching wing-margin^ its tip nearer to tip of costal than to 

 that of anterior branch of fifth longitudinal fork ; base of latter 

 lying much beyond middle cross-vein, both branches not reaching 

 margin, posterior one more than ^ the length of anterior. 



Hah. — Sydney (Skuse). January. 



Section II. Tanypina. 



Head small, transverse above, rounded in front, situated deep 

 in thorax. Eyes large, reniform, separate in both sexes. Ocelli 



