BY H. J. CARTER. 247 



regular and close, giving a finely crenate appearance to the inter- 

 stices. Femora unarmed in both specimens, front tibiae slightly 

 curved inwards, middle and hind tibiae straight. Abdomen shiny 

 bronze-black. Dimensions — £ 14x4 mm.; Q 14x4*5 mm. 



//«&.— Ourimbah, N.S.W. (Mr. R. Helms). 



This beautiful species was discovered by Mr. Helms, to whose 

 courtesy I am indebted for the specimen which I believe to be 

 the £. The £ type specimen has been returned to Mr. Helms. 

 The apparent Q is wider, stouter, with wider femora and slightly 

 less convex than the £, while the latter has more finely attenu- 

 ated liind tibiae. 



This species is easily distinguished from any other Cardiothorax 

 by the unique sculpture of the elytra, being the only member of 

 that genus having distinctly punctate striae; while from the other 

 Cardiothorax with narrow margins to the pronotum (C. politi- 

 collis Bates, G. errans Pasc.) it also differs in having less convex 

 pronotum, combined with brilliant violet-bronze colouring, crinkled 

 disc, and narrowed and little curved sides. 



Cardiothorax pygm^us, n.sp. (Plate xx., fig.9). 



Elongate-oval, flat; pale bronze; under side and legs darker; 

 very nitid above and beneath. 



Head of conventional form, smooth, frontal impression sub- 

 obsolete. Antennae short, fine, joints 4-13 of same thickness, 1st 

 joint much stouter than the rest, 3rd a little longer than 4th. 

 Prothorax subcordate, nearly as long as wide, widest at middle. 

 Apex deeply emarginate, front angles acute. Sides moderately 

 foliaceous and evenly rounded, with narrow reflexed border; base 

 almost straight, narrower than apex, hind angles strongly dentate; 

 tooth pointing outwards and downwards. This dentation 

 accentuated by a large and deep triangular discal impression at 

 base, the base of which is the space between tooth and median 

 line. Shallow sulcus at middle between foliaceous sides and disc; 

 shallow depression on centre of each lobe of disc; medial channel 

 deep, especially at base. Scutellum on same level as elytra, 

 curvilinear triangular, smooth. Elytra : shoulders rounded but 



