6o COLEOPTERA 



A very remarkable and handsome species of the sub-family Beinbi- 

 diince, which I place in the genus Cillcnum, on account of its long, sharp, 

 and curved mandibles, robust, short, submoniUform antennije, and 

 explanated lateral veins of the elytra. The last mentioned peculiarity, 

 it is true, is not so strongly marked in the European Cillenum, but it is, 

 nevertheless, distinctly perceptible, the dilated portion terminating 

 rather abruptly before the apex of the elytra, giving a sub-truncated 

 appearance to those members. 



The New Zealand species differs from our Cilleniim in being 

 decidedly convex and elliptical in form, and especially in the long 

 robust legs. The antenncE do not differ in relative proportions from 

 Cillenum. The head is also very similar in shape; the eyes are not 

 prominent, the frontal furrows broad, smooth, and shallow, and the 

 setiform puncture on the margin of the eye is exceedingly large. The 

 thorax is convex, glossy, impunctate, cordate-ovate, narrowed gradually 

 behind to the obtuse hind angles \ a transverse depression extends 

 across the base, but there are no very distinct fovese. The elytra 

 are elliptical, perfectly rounded at the shoulders ; the lateral margin 

 is dilated most strongly after the middle, the widened recurved rim 

 ends before the apex quite abruptly ; the striae are scarcely percepti- 

 bly crenated, strongly impressed except near the apex. 



The general colour of the insect is pale testaceous-yellow; the crown 

 of the head (as far as the base of the clypeus), the central part of the 

 thorax and middle of its base and apex, and a large triangular spot on 

 each elytron, are dark brassy ; the elytral spot extends from the second 

 to the seventh stria, posteriorly it approximates to the suture, which also 

 is dark. The basal ventral segments are dark brown. 



Note. — The colour of the legs and elytra, except the discoidal 

 portion, is, in one of my two remaining specimens, almost white ; in the 

 other, the colour is testaceous-brown. I found the insect on the sea- 

 beach, far below high-water mark, and under strong sun-light it was by 

 no means easy to detect. 



Tachys. 

 Dejean. 



This is regarded as a synonym of Bembidiitm by Lacordaire, and I 

 have been unable to discover any characters by which it may be differ- 

 entiated from that genus. 



119. T. antarctiCUS, Bates; Ann. Mag. Nat. Hist., March- 

 April., 1874. T. t'M?//^i,'"(;7-(?zw///i-, convexus, testaceo-rufus, nitidus, palpis 

 pedibusque flavo-testaceis ; capite foveis frontalibus, magnis, profundis, 

 interspatio clongato, convexo; thoracc sub-cordato, lateribus antice valde 

 rotundatis, post medium sinuatim angustato, angulis posticis productis 

 acutis ; supra antice convexo, postice transversim depresso, utrinque 

 foveolato, Itevi ; elytris ovatis, humeris rotundatis utrinque striis 3 prope 

 suturam, fortiter impressis, sub-punctatis ; interstitio tertio bipunctato. 



Long., f lin. 



