244 NEW SPECIES OF AUSTRALIAN COLEOPTERA, II., 



bordered throughout; lateral margin raised with border reflected, 

 widest at middle (where they are one-fourth the width of disc); 

 front angles roundly acute and prominent, apical border arcuate and 

 interrupted by medial channel; base subtruncate, hind angles sub- 

 rectangular, distinct but not prominent; sides regularly rounded 

 to near base, slightly constricted near hind angle, base narrower 

 than apex. Disc with medial channel strongly marked through- 

 out but widest at base; irregular basal impressions sometimes 

 extending by faint interrupted foveee to half-way up disc, which 

 is otherwise smooth. Scutellum transverse, subcordate, rounded 

 behind, with small triangular depression on elytra behind this 

 region. Scutellum on the same level as elytra. Elytra a little 

 wider than prothorax at widest, shoulders broadly rounded with- 

 out epipleural fold, even and finely sulcated, with six sulci on 

 each elytron, of which the inner two are continued to apex, 4th 

 and 5th unite near apex. Interstices smooth, equal and slightly 

 convex. Three variable stride on sides and epipleurse, sometimes 

 obsolete. Abdomen smooth, shining; intermediate and hind tibiae 

 straight, fore tibiae slightly arcuate, especially on their outer 

 edge; femora unarmed, but in £ slightly thickened near apex. 

 Dimensions 15x5 mm. 



Hob. — Ourimbah and Wyong, N.S.W. (H. J. Carter). 



This species has some affinit} 7 with C. Walckenaerii Hope. It 

 differs in lighter colour, smaller size, less transverse prothorax, 

 which is also more constricted and narrower at base; in its much 

 smaller hind angles to prothorax, less flat foliaceous margins, less 

 distinct separating sulcus, and much thinner legs. There seems 

 to be very slight sexual differentiation in this species; the only 

 distinction I can find is the slightly enlarged front femora of the 

 £, and the wider body of the Q. It is very common within a 

 limited area, but so far I have not met with it outside the above 

 localities. 



Cardiothorax lachlanensis, n.sp. 



Elongate, black, very shiny, subcylindrical; antennae piceous, 

 tarsi and fore tibiae at apex clothed with castaneous hair beneath. 



