566 STUDIES IN AUSTRALIAN ENTOMOLOGY, NO. IX., 



Tribe BEMBIDIINI. 

 Genus T a c h y s. 

 Tachys mulwalensis, n.sp. 



Robust, oval. Clypeus large, lateral fovese foveiform; pro thorax 

 transverse, wider across base than apex; elytra ovate, disc strongly 

 3-striate on each side of suture, Ijevigate towards sides, third stria 

 strongly impressed on apical declivity and joining sutural stria at 

 apex, submarginal stria obsolete on sides. Piceous'; antennse 

 fuscous, basal joint te.staceous. 



Head wide, minutely sliagreened; front obliquely biimpressed; 

 space between frontal impressions convex ; spaces between 

 frontal impressions and eyes narrow, raised and bearing 

 a setigerous puncture above each eye ; clypeal suture stron-ly 

 impressed, straight, connecting the frontal impressions. Pro- 

 thorax transv'erse, convex, hevigate, widest about middle, 

 strongl}^ and roundly narrowed anteriorly, lightl}' and roundl}'^ 

 obli({uely narrowed posteriorly; anterior angles obtuse, close to 

 sides of head; base wide, truncate, angles rectangular; border 

 reflexed, wide towards basal angles ; lateral basal impressions 

 well marked, wide; a deep transverse stria near base, this stria 

 very near margin on each side, curving forward and punctate in 

 middle ; basal area in middle below plane of disc ; posterior 

 marginal setigei'ous puncture placed on border at each basal 

 angle. Elytra truncate-oval, of same width at base as base of 

 prothorax, convex (subdepressed on disc); sides ampliate behind 

 humeral angles, rounded in middle; strife punctulate on disc, three 

 inner ones entire, third deeply impressed, curving outward and 

 inclosing a punctiform impression on apical declivity; fourth, 

 fifth and sixth very lightly impressed; interstices depressed, third 

 strongly bipunctate near third stria; lateral interstice developed 

 and punctate near base and apex; boi'der wide, reflexed. Length 

 2, breadth 1 3 mm. 



Hah.: N.8. Wales— Mulwala (Sloane; plentiful under the bark 

 of red gum trees standing in the flood waters of the Murray River 

 on •22nd June, 1896.) 



