COLEOPTERA 241 



(22) Afefromciuis iuncipcnnis, Blackburn. 



AnchoDicnus cmieipennis Blackburn, Ent. Mo. Mag. xiv. 1877, p. 146. 



A very distinct species of elongate form, not at all depressed, of black, not very- 

 shining, colour, with narrow head, thora.x not transverse, and deeply striated elytra, the 

 interstices evidently convex. It occurs in several localities but apparently only in very 

 small numbers. 



H.\B. Oahu. "Mountains" (Blackburn). Halemano, 2000 ft.: iNlountains near 

 Honolulu. Rare (Perkins). 



(23) Metroiiicntts perpolitns, sp. no\'. 



Nigerrimus, politus, antennis pedibusque fusco-testaceis ; prothorace basin versus 

 angustato, lateribus rotundatis, angulis posterioribus rotundato-obtusis ; elytris disco 

 sulcato, exterius striis obsoletis. Long. 8 mm. 



One of the most distinct species, recognisable by the deep black, highly polished 

 surface, and the peculiar striation of the elytra ; near the suture the striae are deeply 

 impressed and the interstices convex, while more externally the striae are altogether 

 obsolete. 



This is one ot the rarest as well as most remarkable of the Hawaiian Carabidae. 

 Only three specimens have been found and I have been able to examine its structure far 

 from thoroughly. The tarsal grooves are excessively obscure, but I think really exist on 

 the outer side of the basal joint, and I therefore place the species in this division of the 

 Hawaiian Carabidae. In general form as well as some other characters it makes a certain 

 approach to Disenochus (cf. D. aterrinuts). 



H.\B. Oahu. Wahiawa (Perkins). 



(24) JMetronicmis limbatits sp. nov. 



Sat depressus, nitidus, flavescens, capite, thoracis disco elytrisque piceis, his late 

 testaceo-limbatis ; elytris sulcatis, interstitiis angulatim elevatis. Long. 6 — 7 mm. ; lat. 

 vix 2|- mm. 



This resembles no other species of the genus but approximates by its peculiar 

 sculpture to the aberrant forms of Mesothrisats and Atclothrits that inhabit the same 

 island — Kauai. The thorax is evidently shorter than broad, a good deal narrowed behind 

 but scarcely at all sinuate, the front angles scarcely at all prominent, the side-margin 

 behind the middle more elevated, the disc with a broad vague longitudinal depression, the 

 hind angles broadly rounded. Elytra broadly yellow at the tip at sides, shining, black or 

 piceous except as mentioned, and that the suture and basal margin are also yellow ; the)' 

 have no true striae, but there are seven longitudinally elevated ridges, the summit of each 

 being sharp ; the tip is slightly sinuate on each side, not truncate. The legs and 

 antennae are bright yellow ; the undersurface is broadly yellow laterally, but is infuscate 



