Species of Neio-Zealand Colcoptera. 141 



Gyrinns Uuttoni. 



O. obovatus, ni{»er, nitidus ; prothorace longitudine quam latitudine 

 (jua(ln»])lo rainoro ; scutello t'l()iif,'!ito-trian;,Milari : ulytris lino.itirii 

 puDCtuliitis ; sutura aenca ; pedibus untennis<^uo rulb-tcstuceis. 

 Long. 2 lin. 



Hab. Waikato. 



Rather larger than our G. minutus, the anterior half broader 

 than the posterior half, and the prothorax very considerably 

 longer (the breadth is above six times the length in G. minutus) • 

 and its scutcllar lobe is very transverse. My specimen has a 

 slight iridescent hue. This and other species from ^^'aikato 

 and Otago have been kindly sent to me by Captain Ilutton. 



Potam in uajn n<j ust icollis. 



P. angusto-ovatus, sat deuso grisco-hirtus ; antennis capite fere 

 duplo brevioribus ; prothorace latitudine paulo longiore, apicem 

 versus gradatim angu&tiore, basi bisinuata, lobo scutellari trun- 

 cate ; scutello triangulari ; elytris prothorace latioribus, convexis 

 sat fortiter striato-puuctatis ; tibiis intermediia rectis, tarsis hne- 

 aribus ; unguibus pallidis. Long. 1| lin. 



Hab. Waikato. 



Considerably naiTOwer and more convex than P. substriatus. 

 Probably not strictly congeneric. 



TrachyphlcBus irritus. 



T. ovatus, indumento fusco tectus ; rostro crasso, capite breviore ; 

 scape valido, setigero; funiculoclavaque tiitide rufo-ferrguiueis, illius 

 articulo basali ampliato, sccundo paulo breviore, cteteris transver- 

 sis ; prothorace fere in medio utririque subangulato, supra modice 

 convexo, subtuberculato ; eh'tris subcordatis, prothorace paulo la- 

 tioribus, basi arcuatis, subpunctatis, interstitiis vix elevatis, squa- 

 mulis paucis pallidis adspersis ; pedibus rufo-ferrugineis. Long. 

 1^ lin. 



I led). Tairua. 



Size and shape of T. porcuhis {ante, xviii. p. 59), but with a 

 remarkably stout scape, and the prothorax with the side a 

 little before the middle obtusely angled ; in T. j^orculas the 

 sides are rounded. 



Nrc.EANA. 



Rostrum breve, crassiusculum, capiti contiiuiatura ; scrohen fovei- 

 fonnes, ai»ico rostri supra sita\ OcuU rotundati. Antrun<t va- 

 lidsB ; scnpus ad ocidum postice attingons ; funicvlns articulis 



