228 Major T. Bionn on new Genera and 



bidentate at base, the central tooth long and stout. Lahrvm 

 deeply notched. Aidemue finely pubescent, attaining middle 

 of thorax, basal joint hardly as long as the following two 

 conjointly, the terminal somewhat pointed. Basal four joints 

 of anterior tarsi a little dilated, the fourth ratber smaller 

 than third. 



Underside shining brown; head with fine hairs directed 

 forwards, penultimate ventral segment deeply emarginate. 



Rather more elongate than H. duplicatum, much darker in 

 colovir, thorax with subparallel sides, and the median tooth 

 of the mandibles twice as long. 



(^ . Length 4; breadth | line. 



Timaru. One found amongst fallen leaves by Mr. Walter 

 Lawrence Wallace. 



Group Omaliidae. 

 Omalium flavipalpi, sp. n. 



Elongate, depressed, shining, piceous; legs and apiral 

 segment fusco-testaceous ; tarsi and palpi flavescent ; basal 

 five joints of antennae rufescent, the remaining ones fuscous 

 and opaque. 



Head (eyes included) rather wider than front of thorax, 

 rather finely punctured ; frontal impressions not deep, the 

 intervening space nearly smooth, the large punctures some- 

 what shallow ; there are also a few rugae alongside the promi- 

 nent eyes ; the ocelli are reddish. Antenna with the last 

 six joints abruptly dilated and pubescent, the terminal 

 evidently longer than tenth, basal joint nearly twice as large 

 as the suboval second, third shorter and broader than fourth. 

 Thorax transversely quadrate, finely margined, slightly and 

 gradually narrowed towards the rectangular posterior angles, 

 the anterior broadly rounded ; it is distinctly but not coarsely 

 or closely punctured, the di^coidal impressions are well 

 marked from the base to beyond the middle, and are divided 

 by a smooth central line which appears cariniform, the 

 depression at each side occupies more than half of the whole 

 length ; like the head, it is sparingly clothed with slender 

 yellowish hairs. Elytra distinctly broader and nearly twice 

 the length of thorax, apices truncate but with rounded 

 angles ; their punctuation almost serial, they bear minute, 

 inconspicuous, greyish setae. Abdomen finely sculptured, 

 its greyish pubescence slender and depressed but quite 

 perceptible, the basal four segments broadly margined ; fifth 

 longer and narrower than fourth, not closely united with its 

 broad margins, almost smooth on the middle, but finely and 

 closely transversely rugose at the sides; sixth obliquely 



