CO DIPTERA OF AUSTRALIA, 



last ; second joint as long as the fouitli and fifth together. Wings 

 with a pale yellowish tint, more coarsely granulate than in procax ; 

 a few hairs at the base and along the second longitudinal vein ; 

 considei ably fewer hairs on the wing than in procax ; pale silvery 

 reflection. First longitudinal vein very indistinct, extending 

 about half-way to the tip of the wing ; second longitudinal vein 

 first visible close under the last at about two-thirds of its length, 

 somewhat waving, disappearing some distance before the apex of 

 the wing ; third longitudinal vein close to the posterior margin, 

 very indistinct before joining. (Description drawn from fresh 

 specimen). 



Ilab. —Elizabeth Bay (Skuse). February. 



Genus 3. Cecidomyia, Meig. 



Meigen, Illig. Mag. II., 1803, p. 261 ; Macquart, S. a B. I., 

 1834, p. 159, pi. IV., figs. 10-11; H. Loew, D.B. IV., 1850; 

 AVinnertz, Linn. Entom., 1853, p. 186 ; O. Sacken, M. Dipt. N. 

 Amer., 1862, p. 175; Schiner, F.A. II., 1864, p. 369. 



Antennje long, moniliform or cylindrical, generally verticillate, 

 rarely without verticils, from 2- -t- 9- to 2--f- 36-jointed. Wings 

 with three or four longitudinal veins ; generally a longitudinal 

 fold between the second and third longitudinal vein (Pis. ii. and 



III., figs. 3-16). 



Section I. 



Wings with three longitudinal veins, the third either forming 

 a fork or becoming more or less obsolete towards the tip. 



Sub-section A. 

 Cross-vein, if present, placed between the root and tip of the 

 first longitudinal vein. 



Sub-genus 1. Gonioclema, sub-gen. nov. 

 Antennse in the $ 2- -i- 11 -jointed, joints pedicelled, sub-cylin- 

 drical ; verticillate-pilose. Second longitudinal vein reaching the 

 margin at the apex of the wing; cross-vein distinct; third 

 longitudinal vein not forked ; first, third, fourth, and fifth joints 

 of the tansi short (PI. ii., fig. 3). 



