BY FREDERICK A. A. SKUSE. 273 



terminating at base of anterior stripe, the others continuing to 

 scutellum ; pleurae, pectus, scutellum, and metanotum brown. 

 Halteres white. Abdomen nearly three times the length of thorax, 

 sordid yellowish-brown, clothed with yellow hairs ; anal joint and 

 forceps narrow. Legs whitish-ochreous. Spurs deep brown. In 

 fore legs metatarsus about 2J times the length of tibia. Wings 

 longer than abdomen, hyaline, with a brassy reflection ; veins 

 pale yellow. Costal and third longitudinal veins meeting very 

 much before the apex of wing ; auxiliary vein very indistinct, 

 reaching costa at a point about mid-way between middle cross- 

 vein and tip of first longitudinal ; first longitudinal reaching 

 costa nearer to tip of costa than to middle cross-vein ; second 

 longitudinal very indistinct, reaching costa at a point nearly 

 mid-way between tips of first and third longitudinal veins j 

 middle cross-vein scarcely oblique, appearing as portion of third 

 longitudinal ; fourth longitudinal very indistinct, almost reaching 

 wing-margin, its tip situated nearer to tip of third longitudinal 

 vein than that of anterior branch of fifth longitudinal fork ; base 

 of latter lying somewhat beyond middle cross-vein, its posterior 

 branch J the length of anterior. 



Hob. — ISTarrabeen Lagoon, near Manly, N.S.W. (Skuse). 

 October. 



263. Tanytarsus Ogilbyi, sp.n. 



$, — Length of antennae 0-015 inch ... '38 millimetre. 



Expanse of wings 0-075 x 0-020 ... l-89xO-50 



Size of body 0-055x0-015 ... 1-39 x 0-38 



Antennee brownish-ochreous. Head, clypeus and palpi brownish- 

 ochreous. Thorax yellowish-brown, levigate, with three longitu- 

 dinal rows of hairs ; intermediate one terminating about middle ; 

 pleurae and pectus yellowish-brown; scutellum yellow; metanotum 

 brownish-ochreous. Halteres pale prasinous, the stem ochreous. 

 Abdomen about twice the length of thorax, prasinous, with a 

 pale yellow pubescence ; lamellae of ovipositor ochreous. Legs 

 18 



