COLEOPTERA 207 



impresso et punctato ; elytris profunde striatis, striis internis fere omnino impunctatis, 

 externis, praesertim basin versus, fortius punctatis. Long. 8 — 9 mm. 



There can be no doubt that this is Erichson's species. It varies in colour, old 

 specimens having the brassy surface tarnished, and more or less black. The species 

 has more the facies of European forms than have most of the other Hawaiian Ancho- 

 menides. About twenty specimens have been found. 



Hai;. Oahu (Erichson, Perkins): Kaala mountains, 2000 ft., in Dec. 1892; near 

 Nuuanu Pali, Nov. 1892, one specimen. 



(2) Chalcoiuemis iiiolokaiciisis, sp. nov. 



Niger, nitidus, supra aeneus, antennis fuscis, basi tibiisque testaceis ; prothorace 

 sat lato, transverso, basi subrotundata, angulis posterioribus minus discretis, perobtusis ; 

 elytris profunde striatis, striis ad basin punctatis. Long. 8^ — 10 mm. 



Very closely allied to C. coj'i'usciis, but distinguishable in all the individuals by the 

 rather different prothora.x. The width in comparison to the length is fully as much as 

 five to four ; in correlation with this the base is a little more rounded and the sides less 

 sinuate behind, so that the hind angles are more indistinct and obtuse. There are other 

 slight but variable distinctions, although the character mentioned is the only one that 

 justifies the distinction of the two forms. 



Hab. Molokai : 3000 ft., 12. v. 1893 (Perkins). About fiftj- specimens. 



(3) Chalconiemts costatits, sp. nov. 



Niger, supra vi.\ nitidus, antennis, palpis pedibusque testaceis, elytris vi.\ subaenes- 

 centibus ; prothorace rugoso, angulis posterioribus fere rectis paululum obtusis ; elytris 

 irregulariter sculpturatis, subsulcatis, sulcis punctis magnis, saepius obsoletis, munitis, 

 interstitiis quibusdam costatis. Long. 8 — 9^ mm. 



Plate VL fig. 22, wing. 



This distinct species is very readily recognised, the peculiar dull surface of the 

 elytra, with some of the interstices elevated so as to be angular in cross section while 

 the depressed portions bear a coarse obsolete sculpture, being characteristic. It is 

 apparently sometimes found in company with D. niicantipemiis, and has .several points 

 in common therewith, but D. micaiitipennis may be distinguished at once by the flat 

 and glass-like surface of the second, third and fourth interstices. In C. costatus these 

 interstices are dull and the third is elevated and forms a costa. There is not much 

 variation in the large series of examples, though in some of them the sculpture is more 

 irregular than it is in others. 



Hab. Kauai (Perkins): Mts. Waimea, 4000 ft.. May and June, 1894 (Nos. 25S, 

 262, 265, 267, 271); Koholuamano, in April (Nos. 508, 516, 519, 527, 529); Kauai, 

 4000 ft., Oct. 1895 (No. 551); Kauai, high plateau, 4000 ft., many specimens, August 

 and October, 1896. 



F. a. lit. 27 



