BY FREDERICK A. A. SKCSE. 127 



Ohs. — I have as yet failed to detect any Australian species 

 referable to this ; and the type, S. squamigera, is I believe the 

 only known species. 



Genus 5. Lasioptera, Meigen. 



Lasioptera, Meigen, S.B. 1., 1818, p. 88, pi. in. ; Lasiopteryx, 

 Stephens ; Macquart, S. a B.I., 1834, p. 162 ; Eondani, II"** 

 Mem. Parma, 1840, «fec. ; H Loew, D.B. IV., 1850, p. 21 ; 

 Zetterstedt, D.Sc, IX., 1850, p. 3699 ; Winnertz, L.E., 1853, 

 p. 191 ; Walker, I.B. III., 1856, p. 132 ; O.-Sacken, Mou. Dipt. 

 N. America, 1862, p. 175; Schiner, F.A. II., 1864, p. 406. 



Antennae from 2- +14- to 2- + 32-jointed ; joints sub-globose, 

 sessile, with short verticillate hairs. Wings rather short and 

 broad ; with or without a white spot on the middle of the anterior 

 border. Three longitudinal veins, the tirst and second running so 

 near the costa as to be hardly discernible ; no cross-vein (PI. iii., 

 fig. 18). 

 A. Win(/8 vnth a white spot on the middle of the anterior border. 



79. Lasioptera Mastersi, sp.n. 



9. — Length of antennae 0'025 inch ... 062 millimetre. 



Expanse of wings 0110x0040 ... 2-79xlOI 



Sizeofbody 0090x0-030 ... 2-27 x 076 



Antennae black, 2- -H 15-jointed, joints about as long as broad, 

 sessile, with a whort hoary pubescence; two basal joints brownish. 

 Head black with a golden pubescence, front hoary. Thora.x 

 shining black, with two longitudinal rows of erect golden hairs, 

 sparingly haired from the coUare down to the origin of the wings, 

 bare anteriorly. Halteres yellowish. Abdomen pale reildish- 

 brown, each seguHMit with a row of black scales, the hinticr 

 segments al.so with rows of white scahfs. Coxte brown, hoary. 

 Femora black on the upjMir side and tij), laterally and the outer- 

 most extremity of the tip whitish. Tibiro brown incliiu'd to 

 black. Tarsi whitish. Wings with a bluish reflection, hairs on 

 the surface and fringe grey. Costal border covere<l witli block 



