COLEOPTERA 603 



from a small piece of dead Euphorbia, brought down from Mauna Loa on Hawaii. 

 Single examples only were collected on Oahu and Lanai. No doubt it is on all the 

 islands, excepting possibly Kauai. 



Hae. Oahu, Lanai, Hawaii. — Hawaii, Mauna Loa. 



(30) Xyktobiits cyphus, sp. nov. 



X. cuphorbiae cognatus, forma, colore et vestitu simillimus, pronoti structura 

 distinctissimus. Pronotum medium nigro-bimaculatum, subbituberculatum, a latere 

 visum baud supra simpliciter convexum sed juxta medium evidenter angulatum. 

 Long. 3"5 mm. 



I have seen but one example of this species, which superficially is identical with 

 X. enphorbiae. The pronotum, however, is quite differently formed, being strongly 

 raised about the middle, so as even to have a bituberculate appearance ; in profile the 

 outline is not an almost simple curve as in eiipkorbiae but the front and posterior half 

 meet at a very distinct angle. The unique specimen had been badly handled in 

 mounting, and its antennae were broken oft", but portions of these were found stuck 

 on the ventral surface and, when removed, were found to be similar to those of 

 X. euphorbiae. 



Hab. Oahu, above 2000 ft., 1892. 



(31) Xyletobius 1110 nas, sp. nov. 



Nigricans, plus minus rufo-tinctus, antennarum articulo secundo, tarsisque pallidis, 

 tomento nigricante, aureo-micante vestitus, apices versus elytrorum fascia tomenti 

 pallidi transversa ornatus. Antennae sat breves. Long. 4 mm. 



Allied to X. euphorbiae, which it resembles in shape and in the subconvex 

 termination of the inner interstices of the elytra. Tenth and ninth antennal joints 

 longer than broad, but not at all strongly elongate in the unique specimen, which is 

 probably a male. Owing to the arrangement of the dark tomentum and irregularities 

 of the surface a number of deep black spots are seen in dorsal aspect of the thorax and 

 elytra. The tomentum has a dark golden or coppery sheen in certain lights. The 

 subapical fascia on the elytra is interrupted by the suture and is very conspicuous, 

 being formed of yellowish tomentum, the surface itself beneath the fascia being pale. 



Hab. Maui ; one example in the West Maui mountains above 2000 ft. 



(32) Xyletobitis nigrinus Sharp. 



Xy/etobius nigrinus Sharp, Tr. Ent. Soc. London, 1881, p. 518. 



I have not met with this species, which appears to be very distinct. 



Hab. Maui, Haleakala, 5000 ft. (Blackburn). 



