270 Major T. Broun on uew Genera and 



segments 3-5 so punctured as to appear serrate in front. 

 nostrum almost as lon<}^ as that of the male, more than half 

 its thickness, cylindric, more sparinj^ly and finely punctured, 

 not ])crceptil)ly constricted behind ; autenual insertion be- 

 hind the middle. 



P. porcatum, Sharp, differs in having the thoracic con- 

 striction distant from the apex, by the al)sei\ce of pubescence 

 and interstitial punctures, &c. In P. antennale, also from 

 the neighbourhood of Invercargill, the male may be distin- 

 guished by the yelloAV hairs on the elytra, which may be 

 seen with any good lens, by the rather longer and narrower 

 rostrum not being abruptly and deeply constricted_, by the 

 slightly more expanded apical margins of the elytra, and by 

 the more slender scape. The female has the rostrum longer, 

 the antennae more shining red ; the thorax is more finely 

 punctate at the apex, so that there is no smooth space there, 

 and the elytral margins are broader behind. P. crasftellum, 

 from Picton, a female, has a rather thicker rostrum, shorter 

 scape, and broader elytral margins. These are the nearest 

 allies. 



Length 1-^ ; breadth quite | line. 



West Plains, Invercargill. Mr. A. Philpott. 



Pentarthrum planicolle, sp. n. 



Elongate, subdepressed, nearly glabrous, moderately nitid; 

 piceo-rufous, elytra and legs palei-, almost brick-red. 



Rostrum half the length of thorax, gradually and slightly 

 contracted behind, a little arched above ; distinctly, finely, 

 and not closely pnnctured, with a narrow smooth space 

 near the middle; the head similarly sculptured but smooth 

 behind. Eijes rather small, not prominent, lateral. Antenna 

 medially inserted ; scape rather long, slightly flexuous, 

 inerassate at extremity ; funiculus stout, joints 2-4 about 

 equal, fifth obconical ; club oblong-oval, pubescent, articu- 

 late. Thorax rather longer than broad, broadly rounded, 

 briefly narrowed at base, more gradually towards the front, 

 which is constricted at the sides only; disk somewhat 

 flattened and obsoletely impressed along the middle, its 

 punctuation not coarser than that of tlie head in front, 

 rather coarser but not at all close near the middle, much 

 closer at the sides. Scutelium small, smooth. Elytra 

 somewhat wider than thorax at the base, very gradually 

 and slightly narrowed posteriorly, apical margins not dilated; 

 distinctly but not coarsely puuctate-striate, the sutural 

 stride most evident ; interstices moderate, with minute serial 



