1963] 
Darlington — Tachys 
29 
Range and Coen) south to Victoria (Ferntree Gully) and Tasmania 
(Arve River) and west through South Australia (several localities)' 
to Western Australia (Wiluna). Sloane (1896, 368) records the 
species (“ flindersi” ) over an almost equally wide area including Cen- 
tral Australia. The presence of this species in New Zealand may be 
the result of introduction by man. It occurs under cover by standing 
or running water or in other wet places. 
T'achys habitans Sloane 
Sloane 1896, 358, 368. 
1921, 199- 
This is apparently a common species in southwestern Australia. 
Sloane’s original specimens came from the Darling Ranges, Bridge- 
town, and Pinjarra. I took a series in the general vicinity of Perth 
and southward, at Mundaring Weir, Rottnest Island, Margaret 
River, Bridgetown, and Pemberton. My 33 specimens are all fully 
winged. 
Tachys olliffi Sloane 
Sloane 1896, 376. 
1921, 199. 
This may be the southeastern representative of the southwestern 
habitans. Sloane described it from Forest Reefs (which he says else- 
where is in the district of Orange), New South Wales. I have one 
specimen from Vermont, at Dandenong Creek, east of Melbourne, 
Victoria, collected September 16, 1951, by W. L. Brown, and one 
from Mt. Lofty, South Australia, collected in October, 1921, by 
F. E. Wilson. Both these specimens have more or less reduced wings 
and are evidently flightless, but the species may turn out to be dimor- 
phic. 
Tachys convexus and allied species 
Tachys convexus Macleay is a convex, 4-maculate, 1 -striate Tachys , 
with the basal sulcus of the pronotum 3-foveate at middle. It is 
characterized also in Sloane’s key (1921) by stria 8 of elytron deeply 
impressed, with interval 9 convex; 2 fixed punctures on disc of elytron 
at position of third interval ; apical stride present, with a fixed punc- 
ture on its inner side well back; prothorax with a transverse basal 
impression; humeri not specially modified; frontal sulci short; and 
(especially) posterior prothoracic angles reduced to small but promi- 
nent tubercles. Sloane (1921, 202-203), gives references and synony- 
my of the species. It is common and widely distributed especially in 
tropical Australia, living in damp, shady places by water. I have 
more than 100 specimens from eastern Queensland, from Cape York 
