SirniKS IN .\1STI;AI,IA\ iAl;ANIl>,K — tayi.ok. 59 



Tliiir<(.r. — Black witli iiulicatiuiis of two submccliaii grey stripes, one 

 ou either side, lateral bonU'is with black pubescence, ))ale beliiiid the 

 wings; pleurae black, tonientum and pubescence grey; scutellum dark 

 chocolate brown. 



Abdomen. — Dark ciiocolatc brown, pubescence dark, pale on the 

 segmentations, all the segments with reddish-yellow, lateral, posterior 

 blotches, with pale pubescence, smallest on the last three segments ; venter 

 reddish-brown, pubescence pale. 



Leys. — Coxa?, femora and tarsi black, basal half of tibia? reddish- 

 brown, I'est black ; pubescence on coxa? and Femora above at base pale, 

 elsewhere black. 



WiiKj". — Orrey, veins on fore half and cross-veins at base of discal cell 

 shaded brown, except anterior branch of third vein ; first posterior cell 

 widely open at border ; no appendix ; stigma brown ; haltei'es black. 



Oh!<. — A very distinct and striking species on account of its abdominal 

 ornamentation. One of the two specimens bears a label by Miss Ricardo 

 " Diatoiiiiiieiini sp., near (jeiaella, Wek." 



Hith. — King George Sound, • Western Australia. (Collector. — 

 G. Masters). 



DiATOiMINEUKA I'ULCHRA, Ricardo. 



Ann. Mag. Nat. Hist. (8), xvi. (1915), p. 35. 



(J. Length, 9.5; Avidth of head, 3.5 (vix) ; length of wing, 9; 

 proboscis, 2 mm. 



Head. — Face and cheeks covered with yellow tonientum and mainly 

 black Avitli scattered yellow pubescence ; face with a deep median furrow, 

 the grooA^e deep between the face and cheeks : palpi orange-yellow, first 

 joint short, swollen, less than half the length of the second which ends in 

 a blunt point ; pubescence scanty, yellowish ; first two joints of antennae 

 with yellow tomentum and black pubescence ; pubescence on eyes pale ou 

 the sides, dark elsewhere. 



Thorax. — Similar to that of the female. 



Abdomen.. — Similar to 2, but the golden-yellow haired stripe is also 

 present on the first two and fifth segments in addition to the third, fourth 

 and sixth segments. 



Legs. — Ileddish-j'ellow, tai'si darker, femora appeal- yelloAv in some 

 lights ; pubescence black. 



Wings. — Greyish, first posterior cell not narrowed at the border. 



Obs. — This specimen is labelled by Miss Ricardo as " perhaps the 

 uudescribed (J of L). pulchra, Ric." It is so similar in appearance to the 

 2 that I describe it as such. 



Hub. — King George Sound, Western Australia. (Collector. — 

 G. Masters). 



DiAToMiXKUKA nuEVinosTUis, Maapiurt. 



Dipt. Exot., Suppl. iv. (1842), p. 32<J ; Ricardo, Ann. Mag. Nat. Hist- 



(8), xvi. (1915), p. 28. 



Obs. — The South Australian specimens were identified by Miss 

 Ricardo — the Long Flat specimens are identical. 



Hah. — South Australia. Long Flat, Hastings River, New South 

 Wales ; (Collector and donor. — A. R. McCulloch). 



