270 COLEOPTERA 



474- O. zealandica, White; Voy. Er. Terr., Ins., p. . Head 

 dark brown, punctured, smooth behind ; clypeus yellowish, punctured ; 

 thorax dark in the middle, the sides yellowish, a smooth impression on 

 each side ; elytra bulging much on the side, with four longitudinal lines, 

 the suture smooth ; head, thorax and margins of elytra with scattered 

 brownish hairs ; legs yellowish ; fore-tibice. on the outside with three largish 

 brown teeth ; under-side of abdomen yellowish. 



In one variety the back of the thorax is free from hairs ; in another 

 the margin of elytra is brownish. 



Length, 5-5 J lines. 



NOTE. In my two specimens obtained from Mr. J. Buchanan, 

 F.L.S., of the Colonial Museum, the elytra are testaceous, with a distinct 

 sutural stria on each, the smooth lines are bordered by a regular row of 

 punctures, and the broad intervals are punctate ; they measure from 

 four to five lines only. 



475. O. brunneum, n.s. Closely allied to O. zealandica, but of 

 a uniform reddish brown and slightly shining. 



The clypeus is rounded, but more or less truncate in front. The 

 fourth and fifth antennal joints are short, the latter the shorter of the 

 two, the club three-jointed. 



The clypeus is coarsely and rugosely punctured, the rest of the head 

 more finely and distantly. 



The prothorax is rather remotely punctate. The elytra have a 

 broad suture, with an inner row of fine transverse impressions, and an 

 external row of punctures ; each bears four slight smooth longitudinal 

 costse, the outer obsolete, each of which has. a regular row of punctures 

 along each side, the interstices being almost rugosely punctured, but the 

 sculpture becomes confused towards the apex. 



When compared with O. zealandica, it will be seen that this species 

 has the body concolorous and less hairy, the clypeus longer and more 

 narrowed anteriorly, the thorax less transversal and not so much con- 

 tracted behind, and the elytral costae more distinct. 



The legs are reddish, the antennae yellowish. 



Length, 5 ; breadth, 2 lines. 



My two examples were found at Tairua. 



Group DYNASTID^]. 



Ligula corneous, soldered to the mentum. Mandibles generally 

 overlapped, horny ; furnished inwardly, in front of their molar tooth, 

 with a short fringe of hairs, sometimes absent. Labrum concealed by 

 the clypeus. 



Antenna nearly always with ten joints, their club with three. 

 Anterior coxa transversal, embedded in their cotyloid cavities ; the 

 intermediate sub-contiguous : tarsal claws equal, save sometimes the 

 front ones among the males. Metathoracic epimera always distinct, 

 moderate, trigonal. The three last pairs of abdominal spiracles strongly 

 diverging. 



