OF XEW ZEALAND. 1003 



groove distinct, basal fossae large and separated from the lateral 

 margins by cariniE, the whole basal region more or less finely 

 punctured. Elytra much broader than thorax, oviform, widely mar- 

 ginated, a little convex ; feebly punctate-striate, the sutural sculp- 

 ture most obvious, the lateral obsolete ; interstices plane, the third 

 with three setigerous punctures. 



Similar in size to 0. Icevicollis and 0. fiilviijcs, differentiated 

 from the former by having three instead of four interstitial punctures, 

 kc, and from the latter in having a decidedly longer and narrower 

 tliorax, which is not broadest before the middle, whilst the sides of 

 the wing-cases are less strongly rounded, and, consequently, of more 

 oblong form. There are some elongate slender seta or hairs similar to 

 those near the eyes and hind angles of thorax along the sides of the 

 hind-body, but the ones in the interstitial punctures are minute. 



Length, 2^ ; breadth, nearly 1|- lines. 



1798. O- pallidipes, n-^- Convex, glossy rufo-fuscous, sides 

 and apex of hind-body paler, femora pale-yellow ; tibiae, palpi, and 

 antennae testaceous. 



Head uneven, the space between the ocular groove and frontal 

 fovea rather flat, and with a distinct setigerous puncture. Prothorax 

 rather small, transverse, widest at the middle, its sides well rounded 

 and sinuously narrowed posteriorly, but with a short space in front 

 of the hind angles quite straight, so that these latter, though 

 rectangular, appear unusually conspicuous ; disc convex, with a fine 

 channel down the middle, two more or less evident curved frontal 

 im^oressions, and with the basal fossa? very near the angles, so that 

 there is only a fine raised line between them and the side rims ; there 

 are three or four punctifovm hnpressions near the base, but no close 

 punctuation. El/jtra convex, quite oval, rather large, punctate-striate, 

 the striae rather broader and the punctures rather larger than usual, 

 but not very regularh' impressed ; the common posterior carinas 

 present but not strongly developed ; interstices convex, without 

 obvious punctures, though indications of three may be seen. 



This is the smallest species known to me. It is distinguished by 

 the form and sculpture of the thorax, and by the unusually convex 

 hind-body, which is, moreover, considerably contracted towards the 

 base and apex. 



Length, 2 lines ; breadth, f line. 



Tarastethus. 



iSIov. gen. 

 (Shaiy ; Eat. 2Ion. Mag., vol. xx., p. 23, 1883.) 

 Form short and convex, surface glabrous. Mesothoracic epimera 

 linear, not reaching the coxae. Head with two ocular set^e on each 

 side ; scrobe with an exserted seta in front. Metastcrnum exces- 

 sively short, so that the middle coxae almost touch the hind ones. 

 Antennce with the three basal joints glabrous, the others pubescent, 

 but not densely so, so that there is not a very abrupt contrast 



