Species of New- Zealand Goleoptera. 407 



but distinct , the sutural two interstices plane, the others 

 only moderately convex, all are more or less marked with 

 transverse feeble aciculate impressions, the third has two or 

 three, the seventh five or six setigerous punctures. 



Underside glossy black, nearly smooth, only feebly 

 wrinkled, the terminal ventral segment with two setigerous 

 punctures at the extremity at each side of the middle in both 

 sexes ; prosternal process unimpressed. 



$ ? . Length 9|-10^ ; breadth 3f lines. 



Hanmer. Found by Mr. J. H. Lewis. 



Obs. — The six individuals under examination exhibit 

 certain variations. In one female the hind body is 4£ lines in 

 width. It would be unwise to separate the series into distinct 

 species at present, so I will simply note varietal forms. 



A. — Apical sinuosities deeper, hind body more oviform, no 

 punctures on the third interstices. One male. 



B. — Lateral margins and the elytra with rufescent reflec- 

 tions ; base of thorax very slightly incurved and scored with 

 fine longitudinal impressions ; the thorax itself less curvate 

 laterally, less narrowed, and not at all sinuate behind, the 

 thoracic and humeral angles of almost exactly the same width. 

 One male. 



C. — Elytral interstices flatter, punctuation of striae less 

 distinct ; humeral angles evidently broader than basal angles 

 of thorax, which measures 1\ lines in length by 3^ in breadth, 

 its margins slightly rufescent, more strongly rounded laterally, 

 disk uneven, dorsal groove at the middle interrupted by an 

 oviform elevation, basal fossa? irregular, apex with fine 

 longitudinal stria?, some transverse ones near basal fossae. 

 One damaged female. 



Trichosternus ordinarius, sp. n. 



Shining, head and thorax coppery green; base and lateral 

 margins of elytra viriclescent, disk blackish green; legs 

 piceous, tarsi and basal joints of antennae piceo-rufous, re- 

 maining joints infuscate red; labium fuscous, with somewhat 

 testaceous margins. 



Head (mandibles included) one-third longer than and (eyes 

 included) as broad as thorax ; smooth, with moderate frontal 

 impressions. Thorax subquadrate, apex evidently incurved, 

 with rounded angles ; its sides are only slightly curvate near 

 the front and very gradually but not at all sinuously narrowed 

 towards the rectangular but not projecting posterior angles ; 

 the basal fossa? are large and deep, and the marginal channels 

 are widened near the base ; the central sulcus is rather broad 



