OF NEW ZEALAND. 757 



narrower, but with precisely similar margins ; the intermediate tibiae 

 are very perceptibly flexuose ; the metallic green tinges are incon- 

 stant, one tibia being green whilst the others are black. 



Length, 2f lines ; breadth, i . 



Mr. Cheeseman obtained one specimen on Mount Arthur. 



1344. S. tardus, n.s. JEneous; thorax reddish, elytra infuscate, 

 legs and antennae blackish. 



Head unevenly and finely strigose, behind longitudinally. Pro- 

 thorax rather narrow, cordate, the sides acutely angulated near the 

 middle, from thence incurved, and again dentate before attaining the 

 true base; the median furrow is well defined, and the whole disc 

 striated across. E lytra oblong, incurved before the middle, obliquely 

 sinuated posteriorly; each elytron bears three distinct punctiform 

 foveae of a bluish colour, and several indistinct interrupted striae. 



Quite distinct from S. fossulatus. The posterior projections of 

 the thorax (they can hardly be termed true hind angles) are less con- 

 spicuous than in S. multipunctatus , probably its nearest ally ; the 

 apices of the elytra are more decidedly oblique, and their striae are 

 indicated by the difference in coloration rather than actual impres- 

 sions when viewed from behind, but can be discerned when examined 

 sideways. 



Length, 2% lines ; breadth, i. 



Another of Mr. Cheesernan's captures on Mount Arthur. I have 

 seen one mutilated specimen only. 



J 345- S. pustulatus, n.s. Sub-depressed, shining ; head cupre- 

 ous reddish-black ; elytra silky- black, slightly tinged with red ; legs 

 and antennae blackish. 



Head finely sculptured behind lengthways. Prothorax moderately 

 broad, laterally angulated near the middle, from that point curvedly 

 narrowed, the margins incurved at the base without forming pos- 

 terior angles; surface finely and irregularly strigose, and with an 

 obvious dorsal groove. Elytra broadly oblong, obliquely truncated 

 behind, bearing shallow striae, and on each three large deep foveae. 



On comparing this species with S. edwardsi, it will be noticed 

 that the thorax is much broader and more sinuously contracted 

 behind ; the elytra also are broader and their extremities more 

 truncate, and on their sides, in line with the middle and hind 

 thighs, are large, velvety-black, blister-like spots, most easily seen 

 when looked at from behind. 



Length, 2j lines by nearly i line. 



The only individual I have seen was sent to me from Wellington 

 by Mr. P. Stewart- Sandager. 



Group HYDROBIID-ffi. 



Rygmodus (P. 79)- 



1346. R. puncticeps, n.s. Ovate, convex, shining ; head 

 and thorax black, legs and basal joints of antennae slightly rufescent* 

 club opaque, elytra greenish-blue. 



