998 COLEOPTERA 



and marginal strite is rather more convex than in No. 1335. Abdo- 

 men witli t^\o setigerous punctures near each side of the last seg- 

 ment in both sexes (No. 1335 is the same). In both species there 

 are four ferruginous hairs or tactile sctce on each side of the thorax, 

 tliree before the middle and one on the hind angle. The posterior 

 femora, though very thick and angulate below, are not dentate as in 

 No. 80, which, moreover, has the greatest width of the thorax at 

 the middle, instead of near the front as in the present species. 



(? . Length, 8J ; breadth, 2f lines. 



Mount Egmont. Found four or five years ago. Mr. A. T. 

 Urquhart also brought some specimens in February, 1890. The 

 scutellum is striate at the base. 



1791. P. irregularis, ''i-s. Subparalhl, nearly plane above ; 

 with a somewhat silky gloss, black ; legs and antennae pitchy- 

 red. 



Head rather narrow and elongate, finely but distinctly and irre- 

 gularly wrinkled ; labrum incurved in front. Thorax rather elongate, 

 the length and breadth exactly the same, slightly convex, apex sub- 

 truncate, base medially incurved ; its sides very little rounded, 

 almost straight behind, without any sinuosity there ; posterior 

 angles rectangular, not acute, the anterior depressed ; the surface 

 finely, distinctly, transversely wrinkled, with a few short longi- 

 tudinal stria? in front and behind, more feebly impressed than the 

 others however ; dorsal sulcus unusually broad and deep, expanded 

 behind, not reaching base or apex ; basal fossae elongate (intervening 

 space depressed), with a second smaller, but obvious, one near each 

 angle. Elytra wider behind than in front, humeral angles pro- 

 minent, their sides but little curved ; each elytron has seven rows of 

 irregular, rather deep impressions, a few quite small and round, the 

 majority long and rather broad, all distinctly separated from one 

 another by intervals on about the same level as the loirgitudinal 

 interstices ; marginal sculpture also irregular. 



Male. Posterior /emoj'a much swollen, deeply hollowed for the 

 reception of the trochanters, so as to be quite acutely angulated 

 below ; intermediate tibia somewhat distended inwardly near the 

 extremity ; front tarsi furnished beneath with rather coarse, 

 elongate, ferruginous hairs, in addition to the ordmary sponge-like 

 vestiture. 



This is a very handsome, peculiarly sculptured species. The 

 thorax is narrower and more depressed in front than is the case 

 with its allies, P. cribraUs, P. egmontensis, P. myrmidon, and others 

 like them. The elytral striae, if I may so call their series of large 

 depressions, are unusually interrupted. The wrinkles on the head 

 and thorax are quite obvious, and the head itself is narrower than 

 usual. The prosternal process, and the metasternum, are distinctly 

 channelled longitudinally, and the abdominal process is acutely 

 prolonged forwards, being similar in these respects to P. cribralis. 

 The hind-body is rather fiat, and at each side of the scutellum there 

 is an oblique depression. 



