682 COLEOPTKHA. 



gradually incrassate for fully a third of its whole length and quite obtuse, 

 almost truncate, at the apex. 



Underside shining, basal segment of the abdomen thickly covered \\ith 

 yellow pubescence, second deeply incurved, third large, slightly and widely 

 incurved, as are the short fourth and fifth ; sixth large, its o])erculum large 

 and transversely oval. 



This species is readily distinguishable by the structure of its abdomen 

 and palpi. It must be located in a section apart from the others. 



(^. Length, 2 mm. ; breadth, A mm. 



Oruru, North Auckland. A single male found by Mr. A. E. Brookes 

 amongst decaying vegetable matter on the 6th October, 1918. 



Group Brachyglutini. 

 Byraxis Keitter. Gen. Ins. (Wytsm.), Pselaphidae, p. 206. 

 4277. Byraxis acceptus sp. nov. 



Nitid, moderately convex, impunctate, with a few short greyish hairs 

 on the hind-body ; rufo-piceous, elytra, legs, and antennae more rufescent, 

 tarsi fusco-testaceous. 



Head and moderately prominent eyes as. broad as thorax, subquadrate, 

 with obtuse hind angles ; nearly plane, with a pair of interocular foveae, 

 and another smaller jmir within the frontal impression. Thorax slightly 

 longer than broad, rather broader at the middle than elsewhere, with 

 distinct lateral foveae near the base. Elytra quite double the length and 

 breadth of thorax, narrowed towards the base, with distinct sutural striae 

 only. Hind-body short, considerably deflexed, basal segment largest. 



Legs elongate, rather slender, finely pubescent, posterior tibiae longer 

 than the others, somewhat curved and thickened below the middle. 



Antennae longer than the head and thorax, basal joint cylindric, rather 

 stouter and longer than the oblong second, third and fourth shorter, 

 narrowed towards the base, fifth about as long as second, sixth slightly 

 longer than the quadrate seventh, eighth transverse ; ninth very large, 

 subquadrate, but with its short basal ])ortion a third narrower, its a])ex 

 subtruncate, but, owing to the presence of setae, appearing minutely 

 prominent outwardly, it is impressed or foveate along the inside ; tenth 

 conical, rather smaller than ninth, with a small subacute tubercle under- 

 neath near the outside of its apex. 



Underside rufo-castaneous, smooth, with some slender yellowish hairs ; 

 anterior trochanters finely spinose. Metasternum large, convex, its broad 

 posterior depression more shallow towards the front. First visibl(> ventral 

 segment largest, distinctly bituberculate before the middle. 



B. diversa (2739) (Ann. Mag. Nat. Hist., ser. 6, vol. 12, p. 174) has 

 differently formed antennae, and the ventral tubercles are placed near the 

 (extremity of the first visible segment. B. minidn (236), the other member 

 of the same section, has an oblong terminal joint, longer than the ninth, 

 and the other eight articulations of the antennae are stouter and shorter. 



(J. Length, 1^ mm. ; breadth, | mm. 



Rangiriri, Waikato ; 10th May, 1916. Collected with other Coleoptera 

 by Mr. A. E. Brookes. 



