OF NEW ZEALAND. 373 



670. C. humeralis, Bates / Ann. Mag. Nat. Hist., Dec., 1873. 

 Oblong or oblong-oval ; black ; elytra sometimes with a slight purplish- 

 brown tinge, slightly shining, moderately convex. Head moderately 

 punctured, the punctures not crowded, the interstices sometimes sparsely 

 minutely punctulate ; prothorax distinctly less transverse than in any 

 preceding species, sides more or less strongly and obliquely narrowed 

 from behind the middle, slightly sinuously narrowed behind ; hind angles 

 acute, slightly outwardly directed ; disc finely punctured, the punctures 

 more crowded at the sides, the interstices not perceptibly granulose, 

 sparsely minutely punctulate ; a transverse slightly bowed impressed 

 line at each side the middle near the basal margin, and sometimes a 

 rounded fovea at .each side the median line near the middle of the 

 thorax; lateral margins moderately expanded, a little concave, rugosely 

 punctured, finely and somewhat uniformly thickened at the edges; apex 

 deeply emarginate, front angles prominent, acute, directed forwards ; 

 elytra slightly emarginate at the middle of the base, obliquely and slightly 

 arcuately truncated at each side ; humeral angle very prominent, slightly 

 rounded, reflexed, and deeply concave within the angle ; disc finely 

 rugulose, studded with small granules, rather closely and finely but 

 irregularly punctured, the punctures largest and most crowded (and fre- 

 quently, especially at the base, more or less run together, forming in- 

 distinct irregular fovese) between the costse ; these very indistinct ; 

 expanded lateral margins rather broad at the base, gradually narrowing 

 behind and scarcely extending to the apex, concave in their basal por- 

 tion ; underside shining, pitchy-black ; legs and epipleural fold with a 

 reddish tinge ; flanks of prothorax and sterna more or less strongly re- 

 ticulately rugose and granulose ; antenna, palpi and labrum (sometimes) 

 ferruginous ; anterior border of epistoma rufescent. 



Length, 5^-6 lines ; width of elytra across the middle, 2-3 lines. 



New Zealand. Four examples. 



In the J ? the form is slightly more expanded, the prothorax slightly 

 more transverse, the sides less strongly narrowed anteriorly, and the 

 punctation of the elytra a little more open. 



The three species last described are very near to each other ; but I 

 think there is ample justification, at present at least, in holding them 

 distinct. The species last described is of a more oblong form (especially 

 in the $ ?) than the others ; the prothorax has not the same glossy 

 blackness as in elongata ; and the elytra are less opaquely roughened, 

 more closely punctured, and much less distinctly granulose ; the 

 humeral angle is much more prominent, the lateral expanded margins 

 broader and strongly concave within the humeral angle. From pascoei 

 it may be known by its narrower and more oblong form, finer and closer 

 punctation, and more narrowly expanded lateral margins. 



671. C. thoracica, Bates ; Ann. Mag. Nat. Hist., Dec., 1873. 

 In this species the prothorax is still more decidedly elongated (but is 

 yet wider than long) than in the preceding. Form elongate-oval ; entirely 

 of a dark brownish-black, subopaque. Head and prothorax (save on 

 the middle of the disc) closely punctured, the punctures rounded, a little 

 more crowded at the sides of the latter, the interstices distinctly punc- 



