BT THOMAS G. SLOANE. 143 



than Ion,? (1 X 1.'2 mm), broadest before middle, wider across base than apex; 

 sides obIi(|uely narrowed to base; apex truncate; base bisinuate (lightly rounded 

 in middle, sti-aig-ht on each side) ; basal angles marked, rectangular, with summit 

 blunted; border narrow; lateral basal impressions well marked; a short carina 

 near each basal angle on inner side of marginal channel. Elytra oval (2.5 x 

 1.75 mm.), convex; five inner striae well marked on disc, becoming faint (ex- 

 cept first) on apical declivity, lateral striae more feeble, eighth near ma-gin; 

 eighth interstice strongly carinate at apex, wide and declivous beneath this carina. 

 £?. — Tarsi with two basal joints dilatate, triangular at inner apical angle. Length, 

 4, breadth, 1.75 mm. 



Hub. — Waratah (Carter and Lea). 



Distinguished from other known Tasmanian species by eyes smaller, more 

 depressed ; form less roljust ; elytra much less convex and ampliate ; colour reddish 



brown, &e. 



Tribe Trechini. 



Genus T r e c h u s. 



(Sporades Fauvel = Trechodes Blackburn.) 



Table of Australian and Tasmanian species. 



1 (32) Prothorax with base truncate. 



2 (3) Head narrow, hardly constricted behind eyes; eyes small, depressed. 



Black. Length, 5 mm leai SI. 



3 (2) Head decidedly constricted behind eyes; eyes convex, more or less 



prominent. 



4 (19) Elytra with third puncture of third interstice on apical dechvity. 



5 (14) Form depressed, or subdepressed. Colour black, or with indeterminate 



pattern. 



6 (9) Elytra with punctures of third interstice not interrupting the interstice. 



(Apical striole continuous with fifth stria. Black.) 



7 (8) Elytra with border extending inwards on base to first interstice. 



Length, 5.7 mm ' fiacijicus SI. 



S (7) Elytra with border not extending inwards on base past third interstice. 

 Length, 6.5--7 mm robustus SI. 



9 (6) Elytra with anterior puncture of third interstice interrupting the in- 

 terstice, or beside fourth stria. 



10 (11) Elytra with interstices depressed. Piceous. Length, 5 — 5.5 mm. 



dieiiienetisis Bates. 



11 (10) Elytra with interstices convex. Bicolorous species. 



12 (13) Prothorax with basal angles acute, preceded by a short sinuosity; 



elytra with basal border reaching first interstice. Length, 5.5 mm. 



victor iae Blackb. 



13 (12) Prothorax with basal angles subrectangular, obtuse, not preceded by 



a sinuosity; elytra with basal border not reaching inward beyond 

 fourth interstice. Length, 3.8 mm castelnatd SI. 



14 (5) Form convex, elytra oviform. Black, elytra with a transverse fascia 



of testaceous maculae on posterior half, sometimes also a testaceous 

 post-humeral lunule. 



15 (16) Elytra without post-humeral maculae. Length, 4.3 mm 



s.ubornatellus Blackb. 



16 (15) Elytra with post-humeral maculae. 



17 (18) Elytra strongly striate on disc, striae 2-4 strongly impressed on apical 



declivity; anterior discal puncture near third stria. Length, 3.3 

 mm carter i ^\. 



