14G THE CARABIDAE OP TASMANIA, 



Trechus robustus, sp. nov. 



Elongate-oval, subeonvex; head large, eyes prominent; prothoiax short, wide, 

 truncate-emarginate at base, basal angles obtuse; elytra oval, fully striate, apical 

 stride eontinuous with fifth stria. Piceous, elytra rather iridescent: reflexed and 

 inflexed margins of elytra, leg's, antennae, and mouth-parts reddisli. 



Head wide (1.5 mm. across eyes); vertex convex; front bi-impressed ; lateral 

 and median spaces convex ; eyes roundly prominent ; post-ocular i)art of orbits 

 large, two-thirds length of eyes; labrum emarginate. Prothorax transverse (1.5 

 X 2 mm.), broadest before middle, a little wider across base (l.li mm.) than 

 apex (1.5 mm.); apex emarginate; anterior angles obtuse; sides lightly rounded; 

 border wide, reflexed ; lateral basal foveae wide, short, strongly impressed, bor- 

 dered along posterior margin. Elytra oval (4 x 2.5 mm), rather convex; striae 

 simple, third 3-punetate (two anterior punctures beside third stria, third beside 

 second stria just below beginning of apical declivity) ; interstices (i — 8 united at 

 apex to form a narrow ridge; border not extending on base inwards past fourth 

 interstice. Length, 6.5 — 7, breadth, 2.5 — 2.7 mm. 



Hab. — Zeehan (Coll. Simson, type); Waratah (Carter). 



Two specimens have been examined; it is the largest Australian species of 

 the genus, and is allied to T. pacificus SI.; under the description of T. pacificuft 

 will be found a note of the most obvious differences between these two species. 



Trechus diemenensis Bates. 

 [= T. soUdior Blackburn (1901).] 



Hab. — Launceston, St Mary's (Simson, No. 3045); Waratnh (Carter and 

 Lea). "In moss and lichens," Lea. 



I obtained specimens of a species of Trechus m a damp decaying log at 

 MarysvLlle, Victoria, in January; it agreed with the description of T. soiidior 

 Blackb. ; but to me, it seems couspeeitic with T. diemenensis ; specimens from 

 Dorrigo, N.S.W., are larger, more shining, and smoother towards sides of elytra, 

 but do not seem specifically distinct. 



Trechus castel.vaui, sp. nov. 



Uroad, oval, subdepressed ; head strongly bisulcate; prothorax traiisv.-rse. 

 wide across base; elytra fully striate, striae deep, disc bifoveohUe on course ol 

 fourth stria, a hooked striole on each side of apex, marginal furrow and bnrder 

 not extending inwards along base bej'ond fourth interstice. Piceous; ]>rotlH)ra\ 

 brown with disc piceous; elytra piceous, a lateral space and apex brownish testa- 

 ceous (the lateral testaceous marking is a stripe occupying that i)art of se\enth 

 interstice ojiposite the interval between the discal foveae, and sending off a nai-- 

 row transverse branch across sixth and fifth interstices just behind the level of 

 the posterior fovea); femora Ijrowiiish testaceous; tibiae, tarsi, and antennae 

 brown; palpi testaceous. 



Head large (0.8 across eyes); frontal furrows deep, curving outwards an- 

 teriorly and posteriorly; median sjiace convex; eyes round, convex, coarsely 

 faceted, orbits small behind eyes. Prothorax transvei-se (0.8 X 1.2 mm), sub- 

 depressed, wider iicro.ss base tiian apex; sides lightly rounded, sliglitly olili(,uely 

 narrowed to base; basal angles obtuse, subrectangular; base slightly obli(|uely trun- 

 cate on each side, a little produced backward in middle; marginal channel wide; 

 margin wide, explanate and reflexed at basal angles; basal foveae dee|), divided from 

 margin by a narrow ridge; median line deeply impressed. Elytra widely oval 

 (2.2 X 1.8 mm.), depressed on disc, decidedly declivous on siiles. roundeil at 



