508 COLEOPTERA. 



and fifth very short and widely incurved ; sixth as long as preceding two 

 together, seniicircularly emarginate, seventh transversely oval. 



Fern. — Ventral segments simple. 



The smaller, differently shaped head and remarkable abdominal seg- 

 ments at once distinguish this from previously recorded species. 



Length, 1| mm. ; breadth, | mm. 



Glenhope, Nelson. Several specimens obtained by Mr. T. Hall on the 

 14th and 30th March, 1915. 



4024. Plectomorphus anguliferus sp. nov. 



Moderately convex and robust, nitid ; castaneo-rufous, legs and antennae 

 paler, thorax and hind-body more infuscate ; pubescence yellow, distinct, 

 suberect, mingled with longer outstanding hairs. 



Head large and, including the moderately prominent eyes, nearly as 

 broad as the widest part of thorax, genae oblique or curvedly narrowed 

 behind, its sides somewhat elevated from the antennae to the eyes ; the 

 foveae large, indistinctly prolonged towards the smooth, flattened frontal 

 portion, the hind part appears convex and angularly prominent in the 

 middle. Thorax subcordate, about as long as broad, widest before the 

 middle, more gradually and less narrowed behind than in front ; discal 

 groove well marked, extending from near the apex to the deep angular 

 fossa, which attains the basal margin and with the usual stria connecting 

 the latter with the large lateral foveae, these are prolonged as grooves nearly 

 to the front. Elytra a third longer and broader than thorax, somewhat 

 narrowed near the shoulders, indistinctly punctate ; sutural striae broad, 

 deep, foveiform, and almost dupUcate at the base ; the dorsal also deep 

 and broad there but becoming shallow towards the middle. Hind-body 

 about as broad as the elytra but shorter, deflexed and rounded behind, 

 basal segment slightly longer than the next, with a transverse impression 

 in front. Legs elongate ; anterior femora more robust than the others, 

 the tibiae oblique and bearing short fulvescent setae near the inner 

 extremity. 



Antennae moderately slender, equalling the head and thorax in length ; 

 basal joint stouter but hardly any longer than the oblong second, the next 

 rather longer than fourth, fifth distinctly longer than adjacent ones, seventh 

 rather larger than sixth, eighth smallest; ninth and tenth evidently broader 

 than preceding ones, the terminal subconical and acuminate, as long as 

 preceding two together. 



Male. — Underside rufo-castaneous, distinctly pubescent. Head with a 

 slender central carina which nearly reaches the rotundate basal fovea. 

 Prosternal carina sometimes indefinite. Metasternum flattened or slightly 

 foveate in the middle. Posterior trochanters more distinctly spined than 

 the others. Second ventral segment gradually angulate towards the middle 

 and overlapjnng the third there, its apex with an upright spiniform 

 process ; fourth longer than the next, both widely incurved behind ; sixth 

 rather longer than fourth, almost circularly emarginate, seventh obtusely 

 triangular. 



Fern. — Ventral segments 2-5 diminish, the .sixth short and broad. 



P. lomjiceps (3497), described from a female specimen from Greymouth, 

 and now preserved in the British Museum, is nearly allied, but differs in 

 colour, elytral sculpture, and antennal structure. 



Length, 2 mm. ; breadth, § mm. 



