Genera and Species of New Zealand Coleoplera. 603 



convex behind^ but become flattened towards the base, the 

 third has three, the seventh five or six punctures. 



Femora robust, intermediate tihiiB somewhat produced and 

 compressed at the outer extremity. Prosternum with setse. 

 Apical ventral segment with two setigerous punctures at eacli 

 side of the middle. 



Its nearest ally is T. Enysi, no. 1331. In that species, 

 however, the thorax is incurved in front, its sides are more 

 sinuously narrowed behind the middle, the posterior angles 

 are rather more acute, and the punctures of the elytral striaj 

 are very much finer. Both species exhibit the same prolon- 

 gation of the external apex of the middle tibiae, a character 

 which distinguishes them from the other species of this genus. 



cJ. Length 9|, breadth 3| lines. 



Springfield, near Christchurch. 



One example found by Mr. J. J. Walker, in whose honour 

 it is named. 



Trichosternus akaroensis, sp. n. 



Brilliant hlack, hind body slightly viridescent ; antennae, 

 palpi, and tarsi pitchy red. 



Bead smooth. E^/es prominent. Antennce normal, the 

 basal three joints glabrous, tlie first black. Thorax 3^ lines 

 in breadth_, 2^ in length, distinctly incurved in front, base 

 medially emarginate ; it is widest before the middle ; tlie sides, 

 however, are only moderately rounded and not much sinuate 

 behind, posterior angles exactly rectangular; the dorsal 

 furrow extends from the base, but becomes indistinct in front; 

 basal fosste moderate, situated midway between tlie median 

 furrow and sides ; along the base there are some feeble longi- 

 tudinal lines and near the front a slight transversely curvate 

 impression. Elytra ovate-oblong, subdepressed, rather broad 

 and only moderately sinuous behind, humeral angles denti- 

 form ; distinctly punctate-striate, interstices slightly convex, 

 the third with three or four, the fifth with two, the seventh 

 •with several punctures. 



Underside black. Terminal ventral segment with two 

 Bctigerous punctures on each side of the middle. Prosternum 

 ■with seta3 between the coxse. 



? . Length 11^, breadth 4^ lines. 



Akaroa. 



The male I have not seen, but the two females found by 

 Mr. J. J. Walker, owing to their contour and sculpture, 

 cannot very well be mistaken for any other species. 



