280 DIPTERA OF AUSTRALIA, 



INDICES OF ALAR AND TARSAL PROPORTIONS. 



267. ISOPLASTUS NOTABILIS, Sp.H. (PL XII., fig. 25). 



(J. — Length of anteiiuse 0*050 inch 



Expanse of wings 0-095x0 025 



Size of body 0-140 x 0-025 



Q. — Length of antennae 0-025 inch 



Expanse of wings 0-095 x 0-030 



Size of body 0-085x0-025 



1-27 millimetres. 



2-39x0-62 



3-55x0-62 



0-62 millimetre. 



2-39x0-76 



2-14x0-62 



(J and 9. — Antennae of the ^ whitish or with first joint of 

 scapus black, with whitish or yellowish plumes ; of the 9 entirely 

 yellowish. Head brown or black, with a sparse yellowish pubes- 

 cence. Clypeus and palpi brown or ochreous-brown, with a dense 

 yellowish pubescence. Thorax brown, opaque, more or less hoary, 

 with three longitudinal, parallel, generally indistinct, brown lines 

 beset with pale yellow hairs, intermediate line terminating at apex 

 of an ovate depression situated in front of scutellum, lateral ones 

 reaching scutellum; pleurae brown; scutellum brown, or ochreous- 

 brown, fringed with pale yellow hairs ; metanotum generally 



