COLEOPTERA 



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(9) IMetrotJiorax roiundicollis, sp. nov. 



ConvexLis, nitidus, niger, antennis pedibusque flavis ; prothorace fortiter transverse, 

 lateribus aequaliter rotundatis, angulis posterioribus perobtusis fere nullis; elytris bistriatis, 

 striis magis externis parum discretis. Long. 5 mm. 



Plate VII. fig. 17. 



Extremely similar to M. scaritoides, but distinguished from it and all the other 

 species by the extremely obtuse hind angles of the thorax; this part is nearly i:^ mm. 

 long, and about if mm. broad, and is not greatly narrower than the elytra ; the lateral 

 margin is very fine, and is scarcely at all prominent at the hind angle ; the median 

 channel is also very fine, and there is very little sculpture at the base. The legs are 

 very short. Seven specimens. 



Hab. Molokai. Mountains, 3000 ft.. May 1S93 (Perkins). 



(10) Mctrothorax ciirtipes. 



Brevior, niger, politus, antennis palpis pedibusque flavis ; prothorace fortiter 

 transverso, angulis posterioribus obtusis, haud rotundatis, subtilissime canaliculato, basi 

 parum' punctata ; elytris latiusculis, convexis, stria suturali profunda, stria secunda sat 

 discreta, preterea parum striatis. Long. 4 — 4^ mm. 



Of this species we have received also a large series of about 150 examples; 

 though closely allied to M. scaritoides there is no doubt that it is perfectly distinct, 

 besides being smaller, the hind angles of the thorax are less acute, and the legs 

 considerably shorter. The penultimate joint of the maxillary palpus is considerably 

 shorter. The male genitalia also exhibit well-marked distinctions. The striation of the 

 elytra varies a little as it does in RI. scaritoides. The thorax is extremely finely 

 margined, and the elytral margin is also fine. 



Hab. Molokai. Mountains, 3000 — 4000 ft., on several occasions (Perkins). 



(11) Metrothorax cxtimits, sjj. now 



Nigro-piceus, supra niger, politus, antennis, palpis pedibusque rufis, tibiis antennisque 

 ex parte fuscescentibus ; prothorace fortiter transverso, basin versus angustato, angulis 

 posterioribus perobtusis ; elytris striis quinque punctatis, externis valde abbreviatis. 

 Long. 4^^ mm. 



Nearest to /]/. cnrtipcs but very distinct ; rather narrower, with a narrower base to 

 the thorax, and in colour and sculpture more like JMccyclothorax pclc. Above coal-black, 

 polished, the suture behind rufescent, the raised external margins feebly picescent. The 

 antennae red, at the base, darker outwardly. Thorax strongly transverse and much 

 narrowed behind ; the anterior impression and the median channel distinct. Elytra with 

 a sutural stria extending from base to apex, and with four other very abbreviated striae 

 of punctures. Legs short, red, tibiae and bases of the femora infuscate. One specimen. 



Hab. Hawaii. Kona, 3000 ft., August, 1894 (Perkins). 



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