1963] 
Darlington — Tachys 
25 
The outstanding structural character of this species is the modifica- 
tion of the front of the head, which is unique, so far as I know. It 
is nearly uniform in all 8 specimens, which include both sexes. 
Tachys seticollis Sloane 
Sloane 1896, 358, 366. 
1921, 199. 
The type locality is King’s Sound, North West Australia. My 4 
specimens are from widely separated localities: Bogan River (S. of 
Nyngan) in interior New South Wales, and near Cardwell and near 
Cairns in eastern tropical North Queensland. They were taken in 
wet places but not by freely running water. 
Tachys punctipennis (Macleay) 
Macleay 1871, 116 (Bembidium ) . 
Sloane 1896, 3 66. 
Sloane (1896) treats this as a synonym of monochrous ( — aus- 
tralis, v.i.), but I think he probably misidentified monochrous, which 
is probably an earlier name for flmdersi . I tentatively apply the name 
punctipennis to the present species (briefly characterized in the pre- 
ceding key) because Macleay’s superficial description seems to fit it 
and because it seems to be the commonest species of the group in South 
Queensland. I do not have it from the exact type locality, which is 
Gayndah, but I do have 28 specimens from other South Queensland 
localities including Brisbane and Jimna, and I have an additional 
series from the Richmond River near Wiangaree, northern New 
South Wales. I have also single specimens from 4 localities farther 
south in New South Wales, the 2 southernmost being Braidwood and 
Clyde Mt., 130 or 140 miles south of Sydney. 
The outstanding recognition character of this species is the fringe 
of long setae on the elytral margins, combined with absence of extra 
setae on the prothoracic margins, but certain other characteristics of 
the species are noteworthy too. The lateral margins of the prothorax 
are partly obliterated in all specimens, being weak or obsolete behind 
the anterior marginal setae although more distinct in front of them. 
The inner wings are fairly long and more or less folded at tip, and 
in some individuals look fit for flight, but in other individuals the 
wings look so weak that I think they are probably flightless. 
Tachys semistriatus Blackburn 
Blackburn 1888, 41. 
Sloane 1896, 358. 
1920, 151. 
1921, 199. 
