PSELAPHIDAE. 509 



Routeburn, 16th February, 1914 ; Hollyford, and Staircase, near Lake 

 Wakatipu ; Moa and Mistake Basins, in October, 1913 ; and Mount Algidus, 

 in Canterbury. About forty specimens found by Mr. T. Hall. 



4025. Plectomorphus rugiceps sp. nov. 



Resembles P. angvliferus in general appearance, more uniformly chest- 

 nut-red, palpi and tarsi fulvescent, more thickly pubescent, but less nitid. 



Head suboblong, rugosely punctate, rather narrower than thorax, curvedly 

 narrowed behind the distinct but not prominent eyes, slightly narrowed 

 anteriorly, its sides gradually raised from the eyes to the antennae ; the 

 foveae prolonged as broad grooves to the forehead. Thorax subcordate, of 

 about equal length and breadth, widest before the middle, nearly as much 

 but more gradually narrowed behind than in front ; lateral foveae prolonged 

 anteriorly, the deep discal channel extends from the apex to the angular 

 fossa which becomes linear at the basal margin, the transverse ante-basal 

 groove well marked. Elytra a third longer and broader than thorax, 

 curvedly narrowed at the shoulders, indefinitely and very finely subgranulate ; 

 sutural striae broad and well marked but not distinctly foveiform at the 

 base, the dorsal also broad but very shallow towards the middle. Hind- 

 body as broad as elytra at the base, shorter, with similar sculpture, deflexed 

 and rounded behind. 



Legs moderately stout and elongate, distinctly pubescent, tibiae slightly 

 arched externally. 



Antennae as long as the head and thorax ; basal joint cylindrical, thick, 

 almost double the length of the next, joints 3-7 of one antenna not agreeing 

 with those of the other ; eighth slightly longer than broad, tenth slightly 

 shorter than the oblong-oval ninth, the terminal subconical, elongate and 

 acuminate. 



Underside of head with rugose sculpture and a large angular basal 

 depression, and, like the prosternum, without a distinct carina. Meta- 

 sternum medially impressed. Ventral segments 2-5 gradually diminish, 

 fifth widely incurved ; sixth longer than fifth, transversely impressed, 

 semicircularly emarginate ; seventh large, transversely oval.. 



This differs from each of our North Island species in several details, 

 whilst the unusually elongate basal joint of the antennae and abdominal 

 structure, combined, differentiate it from those recorded from the South. 



(J. Length, 2| mm. ; breadth, f mm. 



Glenhope. One only, discovered by Mr. T. Hall on the 10th December, 

 1914. 



4026. Plectomorphus insignis sp. nov. 



Robust, slightly convex, nitid ; chestnut-red, antennae and legs paler, 

 palpi and tarsi testaceous ; sparingly clothed with moderately short, sub- 

 depressed, yellowish-grey hairs. 



Head suboblong, nearly as broad as thorax, slightly narrowed belnnd 

 the moderately prominent eyes, with obtuse hind angles : interocular foveae 

 broadly prolonged anteriorly, its sides, and the hind portion which projects 

 in the middle as far as the eyes, are obtusely convex and on about the same 

 plane throughout. Thorax of about equal length and breadth, subcordate, 

 widest before the middle, obliquely narrowed in front, gradually behind ; 

 central groove well marked, extending from near the apex to the large 

 subangular basal fossa which reaches the hind margin, lateral foveae 

 18*— BuU. No. 1. 



