PEDERIDAE. 681 



Group Pederidae. 

 Hyperomma Fauvel. 

 4275. Hyperomma flavipes sp. nov. 



Elongate, narrow, subparallel, slightly convex, nitid, with a few slender, 

 decumbent, infuscate hairs ; castaneo-rufous, legs, antennae, and palpi 

 flavescent. 



Head, excluding mandibles, oblong, with obtuse hind angles and several 

 unequal punctures, those on the vertex minute. Mandibles nearly as long 

 as the head, curved, each with a small inner tooth at the base. Eyes sub- 

 rotundate, quite lateral, rather small. Thorax twice as long as broad, with 

 obtuse angles ; triseriate-punctate along each side of the middle, the inner 

 series most regular, each consisting of about ten punctures. Elytra scarcely 

 any longer than broad, with curvedly narrowed shoulders and truncate 

 apices ; irregularly subseriately punctate. Hind-body half of the whole 

 length, closely punctate, more finely than the elytra, its terminal two 

 segments more finely and distantly. 



Antennae shorter than the head and thorax. 



Of about the same size as the South Island species, H. subcaecus 

 (3985), but at once separable therefrom by its quite distinct eyes, longer 

 mandibles and legs. 



Length (mandibles excluded), 5 mm. ; breadth, | mm. 



Oruru, North Auckland. A single individual found by Mr. A. E. 

 Brookes on the 6th October, 1918. 



Group PSELAPHINI. 



Pselaphus Herbst. Gen. Ins. (Wytsm.), Pselaphidae, p. 304. 

 4276. Pselaphus cavidorsis sp. nov. 



Nitid, nearly nude, castaneo-rufous, antennae, palpi, and tarsi more 

 flavescent. 



Head shghtly longer than thorax but not quite as broad, bifoveate 

 between the small coarsely facetted eyes, medially depressed, convex behind, 

 with elevated antennal tubercles, indistinctly punctate. Thorax oviform, 

 rather longer than broad, evidently dilated near the middle, smooth. 

 Elytra subtriangular, longer than thorax, equalling it in width at the base, 

 twice as broad behind ; their basal portion concave, depressed and finely, 

 but quite obviously, pubescent at the extremity, with fine sutural striae 

 behind. Hind-body fully as broad as the apical portion of the elvtra, its 

 basal segment as long as they are, with broad lateral margins, remaining 

 segments deflexed and short. 



Antennae less than half the length of the body, finely pubescent towards 

 the extremity ; basal joint about as long as the following three taken 

 together, second nearly as stout but shorter than the first, both of these 

 closely and minutely sculptured ; joints 3-7 rather longer than broad, 

 8 rather shorter, 10 a little shorter and broader, the terminal large, oviform 

 and acuminate. 



Maxillary ])alpi rather longer than the antennae, basal joint short and 

 slender, second more clavate at the extremity than the base, third short 

 and thick ; fourth half of the whole length, slender near the base, very 



