OF NEW ZEALAND. 749 



A. montivagus, I think, will prove to be merely a varietal form of 

 A. elevatus ; the former, bearing the number 46, is therefore rej)laced 

 by this species. 



1328, A. helmsi, "-s. Sharp; Ent. Mon. Mag., Vol. 

 XVIII., 2^- 47j July, 1881. Sat elongatus, parum nitidus, nigro- 

 piceus ; antennis, palpis, pedibusque rufo-testaceis ; prothorace 

 parvo, lateribus postice fortiter sinuatis, angulis posterioribus 

 rectis, basi utrinqiie profmide impresso ; elytris sat convexis, 

 lateribus valde curvatis, profunde striatis, prope apieem fortiter 

 sinuatis. 



Long., iimm.; lat., 4mm. 



Similar in appearance, and more particularly in colour, to 

 A. otagocnsis (Bates), but abundantly distinct, rather smaller, the 

 upper surface less opaque and not so flat, the thorax shining, the elytra 

 deeply striate. The thorax is much rounded at the sides, and much 

 constricted behind, the posterior part is quite straight, and the hind 

 angles are abruptly marked, and quite rectangular ; the surface is 

 not flat, but is deeply impressed on each side at the base ; the 

 mesial longitudinal channel is very distinct. Eli/tra rather short, 

 the sides and shoulders much curved ; the striae deep, but not 

 punctate ; the interstices are broad and but little convex, the three 

 punctures on the third moderately distinct. There is but little 

 difference between the male and female, even the front tarsi of the 

 former being but little dilated. 



Grey mouth. Helms. 



Tropopterus (p- 27). 



1329. T. marginalis, fi-s. Shining, brownish-black ; antennae, 

 legs, troplii, and elytral margins rufescent. 



Head bisulcate at each side, the grooves not connected in front ; 

 epistome with two punctures. Prothorax sub-quadrate, convex, 

 rounded laterally, sinuously narrowed towards the acute, slightly 

 prominent hind angles ; side margins somewhat flattened posteriorly ; 

 basal foveas broad, rather shallow, and finely punctated ; its sur- 

 face, save a few small basal punctures and dorsal strite, unim- 

 pressed. Elytra convex, broadly oval, marginated, much broader 

 than thorax, rather feebly punctate-striate, the four inner striae of 

 each only distinct ; interstices plane, the seventh bordered by a 

 sharp, curved carina extending from near the posterior femur to the 

 apex ; the sides bear a few punctiform impressions. The three basal 

 joints of the antenna are nude. 



Extremely like an Ooptcrus, but the sutural stria of the wing- 

 case is not recurved at the apex. Allied to T. sulcicollis ; of a 

 broad, moderately convex form, having the frontal fovete separated 

 by a broad rather than carinated interval, and the thoracic foveae 

 not at all sulciform. The elytral sculpture of T. placens is decidedly 

 coarser. 



Length, 3I lines ; breadth, 1^. 



J have one (female) from Mr. P. Stewart- Sandager, Wellington, 



