OK NEW ZEALAND. 377 



and, on the middle, remotely punctured ; a strong angulate impression 

 at each side close to the basal margin, and sometimes an obscure 

 transverse impression between them ; apex moderately emarginate ; 

 anterior angles subacute, directed forwards ; sides more or less regularly 

 rounded, more contracted anteriorly than posteriorly, occasionally a 

 little sinuous before the front angles ; hind angles more or less (some- 

 times almost imperceptibly) outwardly produced, acute ; lateral margins 

 very slightly expanded, a little concave, the edges moderately and almost 

 uniformly thickened ; elytra oblong-oval, feebly sinuous at the base ; 

 shoulders more or less distinctly rounded ; punctation, &c., almost as in 

 C. tibialis, but the interstices, especially at the sides, are more distinctly 

 rugulose ; expanded lateral margins narrow, almost obsolete (or strongly 

 narrowed) at the base, scarcely perceptibly continued to the apex, a little 

 concave, the edges sometimes slightly reflexed at the base ; markings 

 on the under-side similar (but much feebler) to those in C. tibialis ; legs, 

 antennae, and epipleural fold reddish-piceous ; anterior tibicp, acute (but 

 not at all dentiform) at the outer apical angle. 



Length, 61-8 lines; width of elytra, 2|-3thnes. 



New Zealand. Five examples. 



The oblong- or elongate-oval form, the transverse impression between 

 the eyes, the almost smooth prothorax in contrast with the somewhat 

 coarsely sculptured elytra, the scarcely expanded sides of the prothorax, 

 and the lateral expanded margins of the elytra obsolete at the base, will 

 serve to distinguish this species. 



677. O. buchanani, n.s. Rather broadly oval, slightly convex. 

 Head rather broad, its apex emarginated, in front closely, behind 

 rugosely, punctate, the punctation shallow, the interstices more or less 

 reticulated. Thorax large, slightly broader than long, its apex strongly 

 curvedly-emarginate ; the sides in front of the middle are regularly 

 rounded and narrowed, anterior angles sub-acute ; the sides behind are 

 scarcely narrowed except in a slight degree just before reaching the 

 posterior angles, which are sub-acute and directed backwards, not at all 

 divergent ; the base has a broad, central, outward curve, and beyond 

 this, there is a wide sinuation to the hind angle, which overlaps the 

 shoulder so as to conceal the humeral angle ; the sides have raised 

 slightly reflexed margins, the spaces between these and the disc being 

 rather concave, and so sculptured that the interstices between the large 

 punctures appear shining and elevated ; the disc is somewhat convex 

 and closely punctured ; the central portion is not so closely punctate as 

 the rest, so that it exhibits a few apparently smooth spaces, on a close 

 examination, however, very minute i)unctures may be perceived ; it is 

 somewhat depressed behind, and there are two indistinct fovea? near the 

 middle ; colour piceous, with slightly reddened margins. Scittelluin 

 ' broad. Elytra a little wider than the thorax, obovate, their widest 

 part near the middle, very little narrowed, but without any sinuation, 

 towards the shoulders, which are sub-rectangular ; the sides behind are 

 gradually rounded and narrowed, without any obvious sinuation, to the 

 apex ; the side margins are most distinct near the humeral angles, and 

 become but little conspicuous posteriorly ; the disc is moderately 



z ii 



