502 FAUNA HAWAIIENSIS 



The. male has an extremely slight notch at the extremity of the last dorsal plate, but 

 the angles do not project at all. 



Hab. Hawaii. Mauna Loa, 4000 ft. (Blackburn) : Kona, 4000 ft. (nos. 247, 307), 

 Kilauea, nos. 568, 656 ; (Perkins). D. S. 



(21) Nesopetiniis rudis, sp. nov. 



Niger, supra aenescens, antennarum basi pedibusque rufis ; thorace minus fortiter 

 transverse, dense punctato, posterius sat distincte biimpresso, angulis posterioribus 

 obtusis ; elytris subtiliter seriatim punctatis, interstitiis parce punctatis. Long, fere \\, 

 lat. \\ mm. 



Allied to N. quadraticollis, but quite differently coloured, and the hind angles of 

 the thorax slightly obtuse. The presternum is thick behind the coxae, so that the 

 process appears to project a good deal. The male characters are but slight, there being 

 a scarcely perceptible emargination of the hind margin and no projection of the angles, 

 which are very broadly rounded. Only one specimen has been found. 



H.-^B. Hawaii, Kona, nearly 5000 ft., 30. vi. 1892 (no. 320, Perkins). D. S. 



Group 3 A. 



(22) Nesopetinus pe7'kinsi, sp. nov. 



Sat latus, nigricans, prothoracis abdominisque marginibus pedibusque fusco- 

 te.staceis, sub-aeneo-micans, parum nitidus, alutaceus, sat rare ac subtile punctatus, 

 subtile pubescens ; prothorace vix transverso, antrorsum angustato, lateribus posterius 

 fortiter sinuatis, angulis posterioribus fortiter argutis, disco transverse impresso ; elytris 

 obsolete sulcatis ac impressis, subtile seriatim punctatis. Long. corp. 3 — 3f mm. ; 

 lat. corp. \\ — i^mm. 



This is a very well-defined species. The entire surface is alutaceous, or covered 

 with a fine reticulate striation, and the punctures are fine and small, and not dense. 

 The prothorax is truncate both anteriorly and posteriorly ; the angles are definite, 

 especially the posterior, which are very sharp ; the sinuation of the sides is well-marked. 

 In the posterior part of the disc is a marked transverse depression, deeper at its two 

 ends, so that it sometimes looks like two depressions side by side. The punctuation 

 is frequently distinctly closer on the anterior part of the thorax than on the posterior; 

 this is especially noticeable in the males, less .so in the females, in which the thoracic 

 punctures are frequently altogether further apart. The furrows on the elytra are not 

 sharply defined, but are somewhat vague longitudinal depressions ; there are also wider 

 vague depressions. The specimens vary considerably in both length and breadth. 



