2G8 DIPTERA OF AUSTRALIA, 



INDICES OF ALAR AND TARSAL PROPORTIONS. 



258. Tanytarsus montanus, sp.n. (PL xii., fig. 19). 



(J. — Length of antennae 0-047 inch ... 1*18 millimetres. 



Expanse of wings 0-098 x 0-025 ... 2-47x0-62 



Size of body 0-130 x 0-017 ... 3-30 x 0-42 



9- — Length of antennse 0-025 inch ... 0-62 millimetre. 



Expanse of wings 0-110 x 0-030 ... 2-79 x 0-76 



Size of body 0-085x0-017 .. 2-14x0-42 



$ and 9. — Pale ochreous-yellow, levigate ; in ^ basal joints of 

 antennae, head and clypeus, posterior half of thorax and pleurae, 

 pectus and metanotum light ferruginous-brown. Thorax with 

 three longitudinal rows of yellow hairs, intermediate one termin- 

 ating at the middle ; scutellum fringed with long yellow hairs. 

 Abdomen in $ three times, and in ^ twice, the length of the thorax, 



