520 Mr. DRharp on some new 
This genus is allied to Xyletinus, although it is in 
appearance more like the Anobiini ; its form is narrower, 
its head smaller, and the capacity of contraction of the 
front parts less; the antenne are elongate, and the tarsi 
are formed more as in the true Anobiini. From Hol- 
cobius it differs by the nearly simple terminal joint of 
the palpi. 
Houcostvs, n. g. 
Holcobius granulatus, n. 8. 
Sat elongatus, parum latus, subopacus, subnudus, 
niger, antennis testaceis, pedibus piceis; prothorace 
erebre granulato; elytris striatis, scabriusculis. Long. 
6—64 mm. 
Palpi and antenne yellow, the latter moderately long 
and slender, feebly serrate internally ; each joint, from 
the 6th to the 9th, a little longer and more slender than 
its predecessor; 10th .scarcely longer than 8th, but 
decidedly more slender ; 11th distinctly longer than the 
10th. Head conspicuously granulate. Thorax trans- 
verse, moderately longer in the middle than at the sides ; 
the hind angles very broadly rounded, the base only 
feebly sinuate on each side; the front angles greatly 
deflexed, but when seen from the side not in the least 
rounded, but slightly acute; the surface evenly and 
densely covered with conspicuous granules, almost desti- 
tute of pubescence. LElytra striate; the striz near the 
apex not punctured, but towards the base, especially at 
the sides, more or less distinctly punctate, the interstices 
rendered rough by transverse marks. Middle coxe but 
little separated. 
Found in decayed trunks of the Koa tree, at an eleva- 
tion of 4000—5000 feet, on Haleakala, island of Maui. 
Holcobius glabricollis, n. s. 
Sat elongatus, subcylindricus, supra glaber nitidus, 
subtus tenuissime pubescens, niger, antennis rufo-tes- 
taceis, pedibus rufescentibus, femoribus obscurioribus ; 
prothorace fere levigato, pernitido; elytris seriatim, fere 
grosse punctatis. Long. 6 mm. 
Antenne yellow, rather longer than head and thorax, 
not slender, slightly serrate internally, 8rd to 6th joints 
differing little from one another in length; from the 7th 
