256 DIPTERA OF AUSTRALIA, 



with a more or less brassy iridescence ; veins light umber-brown. 

 Third longitudinal vein meeting the costa some distance before 

 apex of wing ; auxiliary vein pale, joining costa opposite middle 

 cross-vein ; costal vein extending beyond tip of third longitudinal, 

 about i the distance to tip of fourth longitudinal vein ; latter 

 almost reaching margin, its tip situated nearer to tip of costa 

 than to that of anterior branch of fifth longitudinal fork ; second 

 longitudinal vein pale, reaching costa about midway between tips 

 of first and third longitudinal veins ; base of fifth longitudinal 

 fork lying considerably beyond middle cross-vein, its posterior 

 branch J the length of anterior. 



Sah. — Blue Mountains (Masters and Skuse) ; Sydney (Skuse). 

 September to January. 



Qjjs. — The white rings on the anterior two pairs of legs at once 

 distinguish this species. Yan der Wulp says with reference to 

 the legs of the species of this genus, " Pooten eenkleurig, hoog- 

 stens aan de gewrichten donker geteekend," so the above seems a 

 peculiar exception to the general rule. 



248. Orthocladius numerosds, sp.n. (PL xi., fig. 11). 



^, — Length of antennae 0-035 inch ... 0*88 millimetre. 



Expanse of wings 0-075 x 0-017 ... 1-89 x 0-42 



Sizeof body 0-085x0-015 ... 2-14x0-38 



Antennae black ; plumes somewhat bronzy at the tips. Head 

 and clypeus black. Palpi deep dusky brown. Thorax black, 

 levigate, with two longitudinal rows of black hairs; pleurae, pectus, 

 and met-anotum black, levigate. Scutellum pitch-brown, fringed 

 with black hairs. Halteres pitch-brown. Abdomen more than 

 twice the length of thorax, deep black, opaque, clothed with brown 

 hairs : anal joint and forceps black. Legs light greyish-brown to 

 pitch-brown, with brownish hairs. In fore legs tibia i- longer 

 than metatarsus. Wings as long or longer than abdomen, pellucid, 

 with a pale bluish tint, and a brassy iridescence ; costal and first 

 and third longitudinal veins pale greyish-yellow. Auxiliary vein 



