BY ARTHUR WHITE. 21 



tapering to a pointed apex. Thorax deep brown, with 

 three grey or yellow stripes, fringed posteriorly with dense 

 pale yellow hairs, and with black hairs on each side before 

 the base of the wings ; the dorsum bears short black and 

 golden pubescence; scutellum brown. Abdomen dark 

 brown, golden, or orange, or deep black-brown with the 

 base on either side orange-brown, or tawny with a black 

 dorsal stripe, those specimens occurring near the coast 

 seeming to be more brightly coloured than those found 

 inland ; in all cases there is a row of light yellow or 

 yellowish-white centre-spots. Legs with femora yellow, 

 tibiae yellow-brown, sometimes with a reddish tinge, tarsi 

 brown. Wings with the costal margin tinged with brown. 



Male very seldom met with ; the only specimen known 

 has the eyes joined and more hairy than in the female ; 

 abdomen golden ; femora and tibiae golden-yellow ; colour- 

 ing in other respects as in the female. 



Walker's type of D. constans in the British Museum 

 is tawny, with a, black dorsal stripe, and costal margin 

 of wings rather more suffused than in the average Tas- 

 manian specimens, but in other respects it seems to agree 

 with the species here described; Macquart's description 

 of P. ruficornis also seems to refer to the same species. 

 The distinguishing characters are the general brownish or 

 tawny colouration, in conjunction with the red antennae, 

 yellow legs, and comparatively short proboscis. 



This is a common species, and seems to be generally 

 distributed in the Tasmanian bush. It is not known to> 

 occur outside Tasmania. My dates range from December 

 26 to January 26. 



DlATOMINEURA SUBAPPENDICULATA, Macq. 



This species is described by Macquart as having the 

 antennae red ; thorax black ; abdomen testaceous with 

 yellow dorsal spots; legs red. 



Length. Female, 14 mm. 



Length of proboscis, 5 mm. 



DlATOMINEURA DORSOMACULATA, Macq. 



This species is described by Macquart as having the 

 antennae red ; thorax black with ashy pubescence ; abdo- 

 men testaceous, with black and white dorsal spots ; femora 

 black, tibiae testaceous. 



Length. Male, 10 mm. 



Length of proboscis, 4 mm. 



