OF NEW ZEALAND. II9 



22 1. O- polituluS, U.S. Depressed, sub-parallel, somewhat 

 polished, reddish-testaceous ; a longitudinal line on the head, the sides 

 of the thorax, and the abdomen of a darker hue, but quite glossy. 



Head large, sub-quadrate, narrowed anteriorly, with prominent but 

 rounded hind angles ; moderately bi-impressed at the base, and rather 

 distinctly punctured. Prothorax depressed on the middle, but without 

 apparent median elevation to separate the depression into two distinct 

 grooves when viewed from above ; when examined from the front angles, 

 however, it will be seen that there are really two elongate impressions 

 defined by a smooth linear space, the surface, otherwise, is punctate. 

 The elytra are almost punctured in striae, the sculpture becoming obso- 

 lete towards the extremity. Abdomen longer than the elytra, punctulate. 

 The pubescence is confined almost exclusively to the hind-body, though 

 there are a few isolated hairs near the sides. 



The insect is rather smaller than O. gena/is, more glossy and coarsely 

 sculptured, and brighter in colour. 



Length, i line ; breadth, |. 



The specimen before me was discovered at Parua. 



222. O. CrenulatUS, n.s. Head, thorax, and hind-body black, 

 elytra brownish, legs testaceous, the seven terminal joints of the antennae 

 fuscous. 



Head without distinct ocelli, sub-quadrate, with slightly raised 

 antennal orbits, and rather prominent mandibles ; there is a dull, 

 oblong, inter-antennal space limited by finely impressed lines, and 

 behind this it is moderately punctured, but at the sides the punctation 

 is coarse and rugose. Prothorax rounded behind, so as to be adapted 

 to the emarginate base of the elytra, transversal, slightly curved laterally 

 and but little narrowed posteriorly, with crenulate margins ; there are 

 two broad impressions proceeding from the base but not attaining the 

 apex, the longitudinal space between them is impressed from the apex 

 to, or beyond, the middle, and there is a more or less obvious depres- 

 sion near each side broader than any of those on the disc ; its punc- 

 tation is not very close or coarse on the middle but becomes coarser 

 laterally. Elytra not very much longer, but, behind, broader than the 

 thorax ; each not very deeply but rather widely depressed from the base 

 to beyond the middle ; they are moderately punctured, some of the 

 punctures become confluent so as to form irregular interrupted strins. 

 Abdomen considerably longer than the elytra, its sculpture fine and 

 indefinite, nearly nude, but each segment is ciliated behind with fine, 

 short, yellowish hairs. Legs moderately long ; middle tibice somewhat 

 arcuated externally, the anterior coarsely fringed. Antennce gradually 

 thickened, their four basal joints reddish, each rather longer than broad; 

 joints five to ten at least as broad as long, eleventh larger than tenth, 

 ovate. 



This and the two following species cannot be satisfactorily located 

 at present. 



Length, 2), ; breadth, .1 line. 



Lfound two in the neighbourhood of W'hangarei Harbour. 



