Coleo-pterological Notices. 317 



convex, rather coarsely but very sparsely punctate ; antenna? very robust, 

 basal joint large, angulate bebind, joints two to eight equal in width and 

 almost equal in length, subquadrate, compactly joined, ninth a little wider, 

 slightly wider than long, the posterior side longer than the anterior, club 

 abrupt, one-half longer than wide, distinctly composed of two fused joints. 

 Prothorax quadrate, just visibly wider at apical fourth than at base ; sides 

 thence nearly straight to the base, rounded and convergent anteriorly ; apex 

 very feebly incurvate ; base transverse, the median lobe very feeble ; disk 

 feebly convex, abruptly nearly perpendicular at the very shallow flanks, the 

 marginal bead extremely fine ; punctures very coarse, perforate, sparse but 

 rather dense toward the sides, except near the base. Scutellum moderate, 

 transversely oval. Elytra nearly twice as long as the prothorax and, in the 

 middle, nearly one-fourth wider than the latter ; sides parallel and very dis- 

 tinctly arcuate ; apex evenly rounded ; disk with extremely feebly-impressed 

 series of rather fine, somewhat distant punctures ; intervals nearly flat, each 

 with a single series of very minute widely distant punctures. Under surface 

 throughout coarsely but rather sparsely punctate. Length 3.0 mm. 



California (Lake Tahoe and Siskiyou). 



A conspicuously distinct species, distinguished from unicolor by 

 its much larger size, piceous color, coarse punctuation, erect hairs 

 of the upper surface and many other characters. 



LAPETHUS n. gen. (Murmidiini). 



Body oval, compact ; head deflexed, the trophi in part concealed in repose 

 by the short prosternal lobe. Antennas inserted in deep foveas on the front, 

 just before and between the eyes the condyle of the basal joint exposed when 

 the organ is reflexed, rather slender, straight, cylindrical, 10-jointed, the last 

 three joints fused into a robust, compact, oval and very abrupt club. Maxillary 

 palpi with the first two joints rather slender, the third abruptly very large, 

 oval, compressed, the fourth slender, subulate, obliquely inserted in the apex 

 of the third. Labial palpi with the first joint very small, second very large, 

 oval, compressed, the third subulate and oblique. Meutum small, angulate 

 at apex, finely and strongly carinate along the middle. Labrum as long as 

 wide, the sides straight and strongly convergent from base to apex, the latter 

 narrow and with a deep angulate notch ; between its upper surface and the 

 epistoma there is a short transversely truncate basal piece which is corneous ; 

 both this and the labrum proper are retractile. Eyes rather small, coarsely 

 faceted. Pronotum widely separating the small globular coxa?, the cavities 

 apparently open behind, the process wide, extending far behind the coxa?, the 

 apex broadly rounded and closely fitted in a corresponding emargination of 

 the mesosternum, its surface continuous with that of the mesosternum ; 

 hypomera wide, excavated throughout the width in anterior half for the 

 reception of the anteunal club, the anterior portion of the excavation separated 

 from the median lobe by a deep elongate cleft for the reception of the funicle ; 



