OF NEW ZEALAND. 805 



Length, i lines ; breadth, f line. 



Described from one example in my own collection, probably from 

 the Waitakerei. 



Rhinanisus. 



Nov. gen. 



Allied to Pentarthrum ; distinguished from it by the rostrum being 

 evidently narrower behind the antennal insertion than its broad 

 anterior portion, even in the female sex ; in the eyes being smaller 

 and less convex ; and in the form being rather broad and sub- 

 depressed, instead of being cylindrical as in that genus. 



The type is No. 912, now Rhinanisus fulvicornis. Nos. 913 and 

 923 become E. parvicornis and B. contiguus respectively. 



Dioedimorpha. 



Nov. gen. 



Rostrum of variable length, rounded and dilated at apex and 

 again at antennal insertion ; scrobes short, oblique, so that the scape 

 in repose extends below and as far as the back part of the eye. 

 Head large sub-oblong, with a broad neck. Eyes small, depressed, 

 distinctly facetted, antero-lateral. Antenna moderate, funiculus 

 5-articulate, club ovate. Prothorax not greatly exceeding the head, 

 sub-conical. Scutellum distinct. Elytra very elongate, quite parallel, 

 not quite so broad as thorax. Legs rather short and stout; femora 

 moderately inflated ; tibia sub-triangular, with terminal hooks. 

 Four anterior coxes, small, with obvious cavities; all three pairs 

 distant. Prosternum large, truncate behind. Mesosternum and 

 metasternum connate, without the least trace of suture, conjointly 

 very elongate. Abdomen long, its two large basal segments not 

 distinctly separated, the next three sutures profound. Body linear 

 and depressed. 



This genus is intended for the reception of Pentarthrum wollas* 

 tonianum and debile, as these two species cannot be satisfactorily 

 referred to Pentarthrum. The above diagnosis has been taken from 

 the male of the former species ; in the other sex the rostrum is more 

 elongate, and the apical and antennal dilatations are less evident. . 



Agastegnus. 



Nov.. gen. 



Rostrum of moderate length, slightly and gradually dilated 

 anteriorly among the males, nearly cylindric in the other sex. 

 Antenna elongate ; scape flexuose, and gradually incrassated ; 

 funiculus 5-articulate, second joint longer than third ; club ovate, 

 moderate : they spring from just before the middle of the beak. 

 Head immersed nearly to the eyes, not contracted behind. Eyes 

 oviform, distinctly facetted, flat. Prothorax almost triangularly 

 ovate, narrowed and constricted in front. Scutcllum small but dis- 

 tinct. Elytra rather broad, sub-depressed, sub-parallel. Legs long ; 

 thighs moderately inflated ; tibiae flexuose, with terminal hooks ; 

 tarsi elongate, their three basal joints short and broad ; penultimate 



