COLEOPTERA 285 



(i) Atclidiuni iiniiiroi, sp. nov. 



Breve, convexum, nigrum, nitidum, supra fusco-aeneo-micans, elytrorum aplce 

 maculaque humerali, pedibus, antennarumque basi testaceis ; elytris sulcatis, sulcis ad 

 apicem abbreviatis, obscure punctatis. Long. 3 mm. 



Plate VII. fig. 22. 



This is of a peculiar coloration, the upper surface having a faint metallic tinge, a 

 spot at the shoulder and the tip being rather vaguely yellow. The thorax is transverse, 

 slightly sinuate at the sides just at the hind angles, so that these may be described as 

 rectangular denticles, the seta is placed as near as possible to the angle ; the median 

 channel is distinct ; close to each hind angle there is a fovea, and between this and the 

 median channel another depression. Elytra ovate, broad, short and convex, each with 

 rather deep and broad striae, which are more or less distinctly punctate ; they extend a 

 good deal beyond the middle but not to the tip ; the seventh is very short. Fourteen 

 specimens. 



Named in honour of Mr G. C. Munro, formerly of Kauai, who gave Mr Perkins 

 much assistance in his work. 



Hab. Kauai. Mountains, Waimea and Koholuamano, 4000 ft. (Perkins). 



Metrocidium, gen. nov. 



Corpus apterum, breve, convexum. Thorax absque setis erectis. 

 The genus resembles Atelidium, but is readily distinguished by the absence of 

 thoracic setae. 



(i) Metrocidium brevicollc, sp. nov. 



Piceo-ferrugineum, supra capite et thorace subaenescentibus, antennarum basi 

 pedibusque testaceis ; elytris rufo-obscuris, apice pallidiore, punctato-sulcatis. Long. 

 2\ mm. 



Similar to Atelidium iiiunroi, rather narrower, with the elytra paler and more 

 concolorous, more deeply sculptured. Thorax strongly transverse, much narrowed 

 behind, and there with a distinct, short constriction, the hind angles rectangular ; the 

 median channel distinct, the lateral margin normal ; on each side with a deep, narrow, 

 curvate impression close to the hind angle, and between this and the middle, with some 

 less definite impressions in front of the base. Elytra very convex, covered with regular, 

 deep, broad striae, which are distinctly punctate and extend much beyond the middle, 

 though they leave the pallid apex unsculptured. Five specimens. 



Hab. Kauai. Mountains, Waimea, 4000 ft. (Perkins). 



