248 [November, 



veiy much rounded off and effaced, while the tarsal sculpture is fine, 

 sometimes even obscure. 



5. — Metromenus audacc, sp. n. 



Nitidus, minus depressus, capite pronotoque castaneis aut nigrocastaneis, 

 pedibus teytaceis, elytris nigris, margine elevato rufescente. Caput augustum. 

 Pronotum nitiduni, leviter aut vix transversum, lateribus postice parum sinuatis, 

 angulis posterioribus distinctissimis et fere rectis, margine posteriors et anteriore 

 subaequilatis. Elytra nitida, fortius striata, marginibus apices juxta fortiter 

 intus siuuatis. Tarsorum posticorum articulus quartus baud quaquam bilobatus. 

 Long, circiter 6 mm. 



Hab. In montibus Oahiiensibus, Waianae versus, supra duo millia pedum 

 alt. bis a me captus ajmo lOOli. 



Ohs. This species is most nearly allied to one in the Koolau range 

 which I have considered to be M. -proterviis Blackb., but it is distinct 

 by the different shape of the pronotum, which is less narrowed behind, 

 so that the hind margin is even wider than the front one. It also 

 appears to be a more shining insect. 



6. — Metromenus hilaris, sp. n. 



Ferrugineus, pedibus pallidis, capite nigricante aut nigrocastaneo, elytris 

 nigricantibus aut nigrofuscis, limbo lato j allido ubique circumdatis, sutura 

 etiam pallida ; nitidus et depressus. Caput nitidum, oculis fortius convexis. 

 Pronotum paullo latius quam longius, postice angustatum, lateribus distincte 

 sinuatis, angulis posterioribus obtusis sive rotundatis. Elytra minus fortiter 

 striata. Tarsorum auticorum articulus quartus bene lobatus, et, lobis inclusis, 

 tertio multo major; posticorum lobis articuli quarti minoi'ibus, articulo tertio 

 quam quartus majore. Long, circiter 6 mm. 



Hab. In montibus Oahuensibus juxta Waianae supra duo millia ped. 

 alt. captus. 



Ohs. One of the brightest-coloured Hawaiian Carabidae, the con- 

 spicuously bordered elytra inaking it, in its group, as conspicuous as 

 Metrothorax oahueiisis Blackb. is amongst the smaller species. 



7. — Clialcomenns vwlokaiensis Sharp. 



I cannot distinguish examples taken on Hawaii (where it is locally 

 common) from those of this species found on Molokai and Maui. 

 Indeed, I have not found it alwa3^s easy to distinguish between 

 C. mololcaiensis and C. corrtiscus Er. of Oahu. I have seen scores of 

 specimens of both species and many variations. 



