BY THOMAS G. SLOANE. ' 203 



examined the original specimens from Gayndah in the Australian Museum under 

 the names T. convexus and 2'. bistriatun, and am certain both names belong to 

 the same species. 



Hab. — Tropical Australia (widely distributed); eistending as far soutli as 

 the Blue Mountains in New South Wales. 1 found it in the Cooktown District 

 in very damp places, often beside springs. 



Tachys haemorrhoidai>is Dejean (1831) var. curticollis Sloane (1896). 



Uab. — Coastal districts of Eastern Australia, from Cooktown to the Mur- 

 rumbidgee River, on margins of fresh water creeks and lagoons. 



I cannot now separate my T. curticollis froui the Palearctic species T. 

 haemorrhoidalis, except by its 4-maculate elytra; the same pattern occurs in 

 var. socius Schm., of North Africa, which is unknown to me in nature. T. emar- 

 ginatus Niet., which is widely spread in the Oriental Region {T. geminatus 

 Schaum., seems a synonym), differs from T. haemorrhoidalis; the sculpture of the 

 head is the most evident difference: frontal sulci longer and deeper, space be- 

 tween sulcus and margin of head on each side longitudinally striolate. 



The following is the synonymy of T. haemorrhoidalis, as far as 1 know it: — 



T. haemorrhoidalis Dejean (=T. kanalensis Perroud, 18(i4, New Caledonia). 



var. socius Schaum (1863) ; 4-maculate form of N. Africa. 



var. curticollis Sloane (1896); 4-maculate form of Australia. 



var. abyssinicus Chaudoir (1876) ; immaculate form of Africa. 



Tachys spenceri Sloane (1896). 



Hab. — Western Australia: King's Sound (Froggatt), Upper Ord River 

 (Helms); Queensland: Cooktown District (Sloane), Kuranda and Townsville 

 (Dodd); Central Australia (Spencer). 



I found it very plentiful in the Cooktown District beside fresh water, hiding 

 in the roots of grass, under stones, and under bark of fallen logs leaning into 

 the water. 



Tachys iaspideus Sloane (1896). 



Hab. — N.S. Wales: Tamworth and Inverell (Lea), Mudgee (Sloane); 

 Queensland: Coomera (south of Brisbane, Sloane). Habits riparian; I found 

 it not uncommon, in February, among the pebbles of a stone-bed on the Cudge- 

 gong River, near Mudgee. 



Tachys murrumbidgensis Sloane (1894). 



This species varies in size from 1.75 to 2.4 mm. in length; I obtained three 

 specimens of larger size (2.6 — 2.75 mm.), in company with specimens of ordinary 

 size, hibernating beneath the bark of a red-gum tree beside the Macquarie River 

 at Narromine in July; I cannot differentiate these large specimens from the 

 typical form. 



Hab. — On sand banks and pebble l)eds by the margins of rivers in N.S. 

 Wales: Murray River (Muhvala), Murrumbidgee River (Narrandera), Cudge- 

 gong River (Mudgee), Macquarie River (Narromine). 



Tachys leai Sloane (1896). 



This species is very close to T. murrumbidgensis SI., from which it differs 

 chiefly by its black colour; prothorax polished, with faint and microscopic puno- 

 turation, more convex and rounded on sides. When describing T. leai, I recorded 



