BY THOMAS G. SLOANE. 371 



base; a well mai-ked transverse impression extending across base 

 just behind posterior angles and defining the basal part; median 

 line very lightly impressed. Elytra wider than prothorax 

 (1'5 X 1 mm.), depressed on disc; sides lightly I'ounded; Ijase 

 truncate, hardly emarginate; shoulders rather prominent, rounded; 

 five finely punctulate lightly impressed strife on each elytron 

 (exclusive of marginal channel), first entire, flexuous (approaching 

 suture) near base, second almost equally impressed as first on disc, 

 obsolete towards base and apex, third and fourth much more 

 lightly impressed, not extending towards base beyond anterior 

 discoidal puncture, fifth strongly impressed on anterior fourth 

 near each shoulder, obsolete for remainder of its course; scutellar 

 striole wanting ; interstices flat, fourth with two discoidal 

 punctures, the anterior at about one-fourth the length of elytra 

 from base, the other a little behind middle on course of third 

 stria; third interstice very finely punctulate on apical declivity; 

 marginal channel deeply impressed along sides, three or four 

 rather strong punctures behind the shoulders; apical declivity 

 with two oblique impressions on each side, the external strongly 

 impressed near the margin (extending round the apex to join the 

 sutural stria), the inner short, placed closed to the external one. 



Length 2- 4, breadth 1 mm. 



Hah.: KS. Wales— Tamworth (Lea). 



Sent to me by Mr. A. M. Lea, to whose generosity I am 

 indebted for a specimen, and to whom I dedicate it. 



In all details of structure this species resefnbles T. murrum- 

 bidgensis, SI., from which it differs by its larger size, wider and 

 more convex shape, impunctate prothorax, black colour, (fee. 

 These two species form a well marked group among the Australian 

 Bembidiides, and it is evident they can only provisionally be con- 

 sidered congeneric with such species as Tachys monochrous, 

 Schaum, T. flindersi, Blkb., &c. 



Tachys murrumbidgensis, Sloane. 

 Hah. : N.S. Wales — Narrandera (Sloane), Tamworth (Lea\ 



