COLEOPTERA 383 



(4) Itodacnus kmcaiensis, sp. nov. 



? Niger, prothoracis margine posteriore, antennis pedibusque testaceis, elytris rufo- 

 brunneis. Long. \\\ — 12 mm. 



This is very similar to /. gracilis, but is of less elongate form, and is distinguished 

 by some small structural characters ; the thorax being shorter than in /. oracilis, and 

 the prosternal process more abruptly bent behind the co.xae. A second character is found 

 in the lamina of the hind coxa, the outer of the two projections therefrom beino- much 

 less than it is in /. gracilis. The sculpture of the two species is very similar. The 

 length of the prothorax is only 3 or 3^ mm., that of the elytra 8 mm. Three specimens. 



Hak. Kauai: Lihue, 3000 ft. vii. 1896: 4000ft. vii. 1890; Halemanu, 4000 ft. 

 V. 1895 (Perkins). 



(5) Itodacmis blackburnianus, sp. nov. 



Nigricans, antennis pedibusque testaceis, prothoracis margine summo elytrisque 

 rufescentibus ; thorace antrorsum minus angustato, sul)tiliter punctato : lamina coxarum 

 posteriorium angulo externo perparum prominente, rotundato. Long. 8 — 10 mm. 



Considerably smaller than /. gracilis, or /. kanaiensis, and with the thorax less 

 narrowed in front, and rather more finely punctured ; readily distinguished from them 

 by the very slight prominence of the angle of the coxal lamina, which in fact has almost 

 ceased to exist. 



We have only two males and five females of this species. 



Hab. Hawaii: Kilauea, 4000 ft. viii. 1S94, viii. 1895, '^^d viir. 1896; Mauna 

 Loa, 4000 ft. 12. VIII. 1892 (Perkins). 



(6) Itodaoius sordidiis, sp. nov. 



Fusco-testaceus, prothoracis margine posteriore, antennis pedibusque testaceis, 

 elytris rufo-brunneis ; lamina coxarum posteriorium, angulo externo perparum promi- 

 nente. Long. 8^ — 9^ mm. 



This species comes very close to /. blackburniainis, but it has the thorax still more 

 abbreviate, it being only 2 or 2^ mm. long. It is also a Hatter and less convex insect 

 and is, I have no doubt, distinct. We have only one male and two females of the 

 species. The male has the antennae much longer than the female, they being 5 mm. 

 long ; in the female only 3^ mm. The darker patch on the thorax appears to be 

 formed by the union ot two longitudinal marks, and leaves the margins paler in an 

 indefinite manner. 



Hab. Kauai : mts. Waimea, 3000 ft. iv. 1894 and 4000 ft. vn. 1896 (Perkins). 

 F. H. III. 50 



