18G ON THE SCARITIDiE OF NEW HOLLAND, 



19. — Cakenum subcostatum. 



Nigrum subnitidum viridi-marginatum, elytris indistincte 

 striatis interstitiis subcostatis, tibiis anticis extus bidentatis. 

 Long. 7 lin., lat. 2f lin. 

 Hab. Clarence River. 

 This pretty little species T received for the first time from the 

 Clarence River a few months ago. 



It is of a rather dull black, — particularly on the elytra, -which 

 have a somewhat ribbed appearance, though of an indistinct 

 character. The facial grooves take their rise behind the eyes, 

 and the thoras and abdomen are margined with green. This 

 insect belongs to the group which consists of 0. i^olltam, Icevi- 

 jpenne, and per^lexum. 



20. — Carenum campestre. 



Nigrum nitidissimum viridi-marginatum thorace late marginato 

 postice rotundato sublobato, abdomiue ovato, elytris subviola- 

 ceis striatis postice bipunctatis, tibiis anticis extus tridentatis. 

 Long. 9 lin., lat. 3 lin. 

 Hab. Lower Murrumbidgee. 

 This beautiful species has some general resemblance to G. 

 elegans. The facial grooves converge in front from behind the 

 eyes, and then turn outwards at nearly right angles. The thorax 

 is almost semi-circular in form, and is slightly lobate at the base. 

 The elytra — which, like the rest of the upper surface, are of a 

 brilliant green with a violet tinge — are marked with rather dim 

 broad, shallow strias, and have a deep puncture near the apex. 

 The fore tibioa are tridendate externally. 



I found one specimen of the above last winter on the plains 

 of the Lower Murrumbidgee. The group to which this insect 

 belongs consists of G. coruscum, smaragdidum, elegans, and dis- 

 tinctam. 



I have been enabled since my last Paper to make some 

 additions to our knowledge of the exact habitat of some of these 

 species, as I have received from Mr. Waterhouse a specimen of 

 C smaragdulum from the N. W. bend of the Murray River ; and 



