TTRINT. 307 



and f)th longest, 8th not perceptibly broader than 7th, 10th distinctly more 

 transverse than corresponding joint of H. rohustus. Metastemum longi- 

 tudinally depressed along the middle but similarly tuberculate. 5th ventral 

 segment as long as ith, broadly impressed in the middle, 6th deeply hollowed, 

 7th nearly semicircular, small, its centre concave. 



In every other known member of the genus the palpi and tarsi are yellow 

 oi' fulvescent. 



,^. Length, 2| mm. ; breadth, quite 1 mm. 



Mount Hutt. Found by Mr. T. Hall amongst dead leaves on the ground 

 (altitude, 4,500 ft.) on the i2th April, 1912. 



3728. Hamotulus cornutus sp. nov. 



Convex, nitid ; head, thorax, and hind-body fusco-rufous, elytra, an- 

 tennae, and legs chestnut-red, middle of femora fuscous, tarsi testaceous, 

 palpi yellow ; pubescence yellow, more or less erect. 



Antennae a third longer than head and thorax, 2nd joint quite half the 

 length of the basal, slightly thicker but hardly longer than 3rd ; joints 

 3-6 differ but little, all oblong ; 7th rather shorter than preceding ones yet 

 longer than the bead-like 8th ; 9th subquadrate, slightly broader than 

 8th at its base, still broader in front ; 10th of similar foim, but wider ; 11th 

 large, about the length of the preceding two together. 



Posterior tibiae less curved than the intermediate, with a thick spine 

 below the middle. 



Metasternum deeply and broadly concave along the middle ; the tubercles 

 are laterally compressed, their base seems to occupy the side of the meta- 

 sternum, they are strongly but gradually raised behind, vertical in front, and 

 close to the intermediate coxae ; towards the summit they have a slight 

 backward curvature and appear horn-like there. 



Ventral segments 2-4 ciliate behind, 5th simple, semicircularly emargin- 

 ate ; 6th not at all concave, only slightly impressed ; 7th concealed by the 

 protuding genital appendage. 



Like H. rohustus in most respects, but smaller, with entirely different 

 sternal tubercles, which, indeed, are far more prominent. It is more nearly 

 allied to H. spinipes, 2459, and still more closely to H. frontalis, 3403, 

 from Broken River. The former, however, has a broader head and straight 

 posterior tibiae ; the latter differs in minor details, particularly underneath. 



cj. Length, 2^ mm. ; breadth, | mm. 



Mount Hutt. Described from a single male taken on the 12th April 

 1912, by Mr. T. Hall. 



Group SCYDMAENIDAE. 



3729. Scydmaenus angulifrons sp. nov. Scydmaenus Latreille, Man. N.Z. 

 Coleopt., p. 144. 



Elongate, narrow, convex, shining, finely and distantly punctate near 

 the sides ; nigro-piceous, palpi, antennae and legs castaneo-rufous ; spar- 

 ingly clothed with distinct, elongate, suberect yellowish pubescence. 



Head elongate, widest in line with the small eyes, considerably but very 

 gradually narrowed backwards ; with a rather large and deep triangular 

 frontal depression, so that the forehead appears angulate immediately 

 behind each antenna. Thorax oviform, of almost equal length and breadth 

 truncate at apex, its sides moderately rounded, with a large shallow 



