290 REVISION OF THE THYNNID.E OF AUSTRALIA, I., 



rounded, with a median, longitudinal carina. Dark fuscous, the 

 head black; mandibles, antenna?, legs and pygidium ferruginous. 

 Length 9 mm. 



Hah. — Mackay, Q.((J9 in cop.), Cairns, Cape York, Q. 



Described by Ritsema from an Aru specimen. In Aru 

 specimens the scutellum is rather longer, and more rounded than 

 truncate at the apex. 



T. BARBATA Sm. 



Adurus harhatiLs Sm., Cat. Hym. B.M. vii. p..57,n.I3, 1859((J9). 



I have not seen this species, and the type, which was in Bake- 

 well's Collection, appears to be lost. The female seems to be 

 distinguished from that of all other species of the genus by the 

 sculpture of the second abdominal segments. 



Species of Tachynomyia have been described from the Austro- 

 Malayan region and not yet recorded from Australia as follows : 



1. T. COMATA Sm. 



Aelurus comatus Sm., Journ. Proc. Linn. Soc. Zool. vii. p. 27, 

 1863(^). 



I/ab. — Waigiou. 



2. T. FRAGILIS Sm. 



Aelurus fragilis Sm., Journ. Proc. Linu. Soc. Zool. viii. p.78, 

 1864(^). 



Hah. —Movty. 



3. T. INSULARIS Sm. 



Thynnns insularis Sm., Journ. Proc. Linn. Soc. Zool. vii. p. 26, 

 1863($). 



Hah. — My sol. 



The following species which have been described as belonging 

 to Tachynomyia or Aelurus should in my opinion be placed 

 elsewhere: — Tachynomyia caelehs Sauss., Tachynom^yia nitens 

 Sauss., and Aelurus fulvifrons Sm. These will be dealt with in 

 a later paper. 



