l!V THOMAS G. SLOAXE. 1-15 



is wider than his. as including his Trechodes, and the table given above is on 

 quite dilferent lines from his. 



.Maeleay has described as belonging to the genus Trechus, four species whicli 

 must be excluded from it. These are T. ater, T. atricepfi, and T. concolor^ which 

 are Harpalids, and T. rufilahris which is a species of Perigona. 



To render my work more complete I have included in the table the species of 

 the mainland, and have described a new species (T. castelnaui) from Victoria. 



Trechus leai, sp. nov. 



Elongate-oval, convex ; liead narrow, eyes small, depressed ; prothorax broader 

 than long, base truncate, basal angles obtuse; elytra oval, fully striate, eighth 

 interstice narrow and raised at apex. Black; legs, antennae, and mouth-parts 

 reddish. 



Head convex, elongate (0.9 mm. across eyes), hardly narrowed behind eyes; 

 frontal impressions long, parallel, deep; eyes small, round, depressed; post-ocular 

 parts of orbits very little swollen, longer than eyes. Prothorax convex, sub- 

 quadrate (1.3 X 1.5 mm.), broadest before middle, wider across base than apex; 

 sides lightly rounded, obliquely narrowed to base, border wide, reflexed, prominent 

 at basal angles; lateral Ijasal impressions short, rather narrow, separated from 

 marginal channel by a raised space. Elytra strongly convex, oval (3.2 x 2.2 

 mm. ) ; interstices convex on disc, third with a f oveif orm puncture about anterior 

 third, and another puncture b^ide second stria on posterior declivity. Length, 

 5, breadth, 2.2 mm. 



Hah. — Cradle Mountain (Carter and Lea). Uni(iue. 



This species is very distinct from all other described Tasmanian species. By 

 the form of its head, prothorax, and elytra it is allied to T. subornatellus Blfickb.. 

 but can be distinguished easily from that species l)v laiger size; head narrower 

 with less prominent eyes; elytra without a pattern, etc. 



Trechus pacificus, sp. nov. 



Elongate-oval, subconvex; head ordinary, eyes prominent; protliorax short, 

 wide truncate at base, basal angles obtuse but marked; elytra oval, fully striate, 

 apical striole continuous witli fifth stria, basal border extending inwards to scu- 

 tellum. Deep black, nitid ; femora pieeous ; tibiae and tarsi reddish. 



Head wide (1.2 mm. across eyes), front strongly bi-impressed ; lateral and 

 median spaces convex ; eyes prominent ; post-ocular parts of orbits about half 

 the length of eyes; labrnm emarginat«. Prothorax transverse (1.2 x l.g mm), 

 widest at middle, a little wider across base (1.45 mm.) than apex (1.3 mm.) ; 

 apex lightly emarginate; anterior angles rounded; sides evenly rounded; border 

 reflexed, prominent at basal angles; lateral basal impressions shallow, wide. 

 Elytra oval (3.5 X 2.3 mm.), strongly striate; striae simple, eighth distinct; 

 interstices depressed third 3-punctate (two anterior punctures foveiform, beside 

 tliird stria, third on apical declivity beside second stria) ; interstices 6 — 8 united at 

 apex to f onn a narrow pointed ridge. Length, 5.7, breadth, 2 . 3 mm . 



Hab. — Strahan (Carter and Lea). Unique. 



Allied to T. robustus SI., Init smaller; colour dee|ier black; femora pieeous; 

 eyes more prominent; post-ocular part of orbits smaller; prothorax proportion- 

 ately wider, evenly rounded on sides, widest at middle, less emarginate on base, 

 basal foveae shallower; elytra less convex, more decidedly bordered on base, bc:rder 

 extending inwards past fourth interstice — (it is tlie only Tasmanian species siiow- 

 ing this character). 



