OF NEW ZEALAND. 659 



little at both extremities, neither of which reaches the base or apex ; the 

 basal fossae are large, and on their outer side are depressed, but not to 

 such an extent as to give the appearance of two separate foveae at each 

 angle ; the curved frontal impression, though perceptible enough, is not 

 continued to the anterior angles ; the disc itself is covered with undulat- 

 ing aciculate marks, and, besides these, there are similar, abbreviated, 

 longitudinal impressions along the base and apex. Elytra oblong-ovate, 

 moderately convex, their shoulders prominent, a good deal narrowed, but 

 not much sinuated behind ; each has seven finely-punctured dorsal striae, 

 and a row of punctiform impressions beyond ; the interstices are nearly 

 level, but become more or less irregular near the apex ; the smooth space 

 between the seventh and eighth striae terminates before reaching the 

 posterior sinuation, and at that point the seventh interstice is furcate. 



The legs are robust, the hind thighs dilated and distinctly dentate. 



Under-side pitchy-black, bearing numerous shallow punctures. 



The scutettum is striated to its apex. 



Length, 6 lines ; breadth, 2 T \j. < . 



I received one specimen, quite recently, from Professor Hutton, who 

 found it near Dunedin. The species may be known by the occipital line 

 and wholly striate scutellum. 



Group ANISODACTYLIDJE (p. 45). 

 Triplosarus (P. 45). 



1151. T. nOV88-Zealandi3D, Castelnau; Trans. Roy. Soc. Viet., 

 Part ii., Vol. viii.,/. 194. Body broad and depressed, light-brown. 



Head round, with two punctiform impressions between the eyes; thorax 

 short, transverse, rounded laterally, with the anterior angles rounded and 

 the posterior ones obtuse and rather prominent ; a transverse impres- 

 sion in front, a feeble longitudinal sulcus on the middle, and two broad 

 depressions behind ; elytra broad, striated, with a broad abbreviated 

 stria near the scutellum, after the sutural one ; a feeble punctiform im- 

 pression behind, on the interval between the second and third striae; 

 the margin impressed on its anterior half ; abdomen not sensibly impressed 

 laterally ; legs, antennae, and parts of the mouth light-brown. 



Length, 5 lines. 



North Island. 



Group HYDROBIID^I (p. 77) 

 Rygmodus (p. 79) 



1152. H. Cya.neUS, n.s. Body moderately convex, oblong-oval, 

 nude, glossy, the elytra blue, the rest of the body black. 



Head closely and distinctly punctured, narrowed anteriorly, with raised 

 frontal and lateral margins. Prothorax transversal, curvedly narrowed 

 towards the front, posterior angles rounded, the sides, especially behind, 

 explanate ; it is finely and densely punctured on the disc, the sides more 

 coarsely, and there are two punctiform impressions at the base. Scu- 

 tellum elongate, with a few fine punctures. Elytra oblong-ovate, only 

 moderately convex ; feebly, almost obsoletely, striate on the disc, the 



