Genera and Species of New Zealand CoJeoptera. -457 



expanded at the base ; the fossse are large and broad. Elytra 

 ample, one-half longer than broad ; shoulders rounded, the 

 apex also rounded, so that the extremity of the hind body- 

 seems broad ; their striae are well marked, but the punctua- 

 tion is indistinct ; the suture is bent forwards at the apex, so 

 as to form a carina in line with the sixth interstice ; the 

 apical sculpture is obsolete ; there are three punctures on the 

 third interstices. 



Legs slender ; basal joint of the anterior tarsi oblong, 

 fourth small and corditbrm, without lobes, and hardly the 

 ■width of the long terminal one; intermediate joints short ; 

 claws simple. The palpi are similar in structure to those of 

 Anchomeims. 



The long, deep, interocular furrows, relatively small thorax, 

 witli large outstanding basal angles, and the rather large 

 hind body, broadly rounded posteriorly, give this species a 

 peculiar aspect. The discovery of the male, years hence 

 perhaps, will probably cause its removal from Anchomenus ; 

 its natural position, however, should be between that genus 

 and Tarastethus. 



? . Length 2^, breadth 1 line. 



Westport. 



My unique specimen is another of Mr. J. J. Walker's 

 interesting captures. I have much pleasure in attaching his 

 name to it. 



Tarastethus simplex, sp. n. 



Body slightly nitid, piceous ; head and thorax more 

 rufescent than the hind body ; legs red ; palpi, antenna, and 

 tarsi paler. 



IJead with two erect setas near each eye. Antennce gradu- 

 ally thickened towards the extremity, the basal three joints 

 glabrous, second joint not much more than half the length of 

 the third, eleventh oval. Eyes but little convex. Thorax 

 slightly transverse, widely incurved in front, widest near the 

 middle; its sides distinctly margined, moderately rounded, 

 gradually narrowed behind, posterior angles rectangular ; 

 the disk is slightly convex, the central groove does not attain 

 the front margin, there are no basal fovea?, and only indistinct 

 sculpture near the hind margin. Elytra ovate-oblong, their 

 sides gently curvate ; tliey have fine impunetate strias and 

 simple interstices ; the external, however, form fine carinse 

 near the apices. 



The chief peculiarity consists In the entire absence of the 

 usual thoracic fossse. The hind body is more oblong and flatter 



