376 ON THE AUSTRALIAN BEMBIDIIDES, 



three discoidal punctures on each elytron placed as in Tachys leai, 

 SI. 



Length 2-25-3, breadth 0-75-1 mm. 



Hah. .- N.S. Wales— Tamworth (Lea). 



The description is founded on a specimen of the largest size. 

 Mr. Lea regards the smaller specimens as representing a different 

 species from the larger ones, but I have been unable to follow 

 him in this; though, as the collector of a large number of speci- 

 mens and a careful observer, his opinion in this matter should 

 outweigh mine. 



Appendix. 



Specimens of a new species of Tachys were received from Mr. 

 A. M. Lea after the completion of my notes on the genus, and 

 too late to enable it to be put into its proper place according to 

 the table of species "given on p. 356; however its affinities will be 

 found indicated in the note following the description below. 



Tachys olliffi, n.sp. 



Robust, oval, convex; prothorax rather short, subcordate; five 

 discoidal punctate striae, a finely punctate submarginal stria and 

 a well marked apical stride on each elytron. Black; legs, upper 

 side of mandibles and basal joint of antennae testaceous; antennae 

 and palpi fuscous. 



Head laevigate, convex; front lightly bi-impressed. Antennae 

 short, stout. Prothorax laevigate, transverse, subcordate; sides 

 rounded, narrowed to base, shortly subsinuate before basal angles; 

 anterior angles rounded, not marked; posterior angles subrectan- 

 gular, slightly obtuse at summit; lateral border reflexed; lateral 

 basal impressions wide, deep, short, extending to margin at basal 

 angles; a light impression across base between lateral foveae; 

 median line obsolete. Elytra a little wider than prothorax, 

 convex, declivous on base; sides lightly rounded; first stria entii-e, 

 punctate anteriorly; stria? 2-5 consisting of rows of punctures on 

 disc becoming successively shorter (the punctures fewer, larger 

 and more distant from one another in fourth and fifth rows); 



