412 FAUNA HAWAIIENSIS 



contrast to the minute ninth joint. In the female the club is much smaller, but is also 

 two-jointed, the terminal joint being rather longer than broad, the tenth about as long 

 as broad. Ten specimens. 



There is one specimen (Halemanu, 4000 ft. v. 1895), of rather larger size and 

 more shining : approaching in fact A. sicbguttatus. 



Hab. Kauai. Mts. Waimea, 3000 — 4000 ft. v. 1894; Halemanu, 4000 ft. v. 1895 

 (Perkins). 



(2) Argocents snbguttatiis, sp. no v. 



Convexus, niger nitidus, pube minus dense vestitus, elytris maculis quatuor testaceis 

 vix discernendis, fasciis duabus pubescentiae pallidae, antennis pedibusque sordide 

 testaceis, illis clava nigra. Long. 3^- mm. 



Apparently closely allied to A. siinilaris but distinguished by its larger size, more 

 shining surface, with less punctuation and pubescence, and by the rather more slender 

 club of the antennae. The reddish marks on the elytra are probably variable. We 

 have only two specimens, both females. 



H.^B. Kauai, mts. Waimea, 4000 ft. v. 1894 (Perkins). 



EocERUS, gen. nov. 



Corpus depressum. Antennae parvae, clava biarticulata. Palpi maxillares breves, 

 articulo ultimo lato. Prosternum processu brevissimo. Coxae intermediae sat distantes, 

 canalicula inter eas subobsoleta. Lamina coxarum posteriorium sat magna. 



Only the female is known of this genus. The insect somewhat resembles a flat 

 Labroccriis, but is quite distinct on account of the very imperfect groove for the 

 reception of the prosternal process, which itself is so minute as to be difficult to detect. 

 The process scarcely projects behind the front coxae and the slight groove on the 

 mesosternum is not for the reception of the process but merely a guide to it during 

 motion. 



The female of the genus Argoccriis is adequate for establishing the status of the 

 genus Eocerus, as it also has the prosternal process obsolete ; but in it the mesosternum 

 has a definite grove, and the coxae are more approximate, and the breast less deplanate. 

 The female of Ars^occriis has, too, a larye tenth joint ot the antenna, Eocerus a small 



one. 



( I ) Eocerus dcpresstis, sp. nov. 



$ Depressus, niger, pube brevi vestitus, antennis testaceis clava fusca, tarsis fusco- 

 testaceis ; prothorace subtiliter granulato, elytris crebre punctatis. Long. 3^ mm. 



Antennae about as long as the thorax, terminal joint rather large, pointed oval, 

 truncate at the base, tenth joint very short, about as broad as the terminal one, third — 



