560 Coleojjterological Notices, V. 



Elytra witli two fine and acnte, parallel approximate and entire marginal 

 carinae ; surface much less convex aciiniiliatUS n. sp. 



Other forms doubtless exist in cabinets, but the species are much 

 less numerous than in Acritus. 



B. globulin IIS. — Broadly oval, very convex, polished, dark rufo-testa- 

 ceous throughout. Head even, not concave, very minutely, sparsely punctu- 

 late, gradually more closely and strongly punctate toward the epistomal apex ; 

 antennal tubercles rather acute, not vertically prominent. Prothorax nearer 

 thrice than twice as wide as long ; sides very strongly convergent, broadly, 

 strongly and evenly arcuate throughout ; apical angles acute ; marginal line 

 acute, extending unbroken along the apex ; punctures very fine and sparse 

 anterioily, becoming gradually slightly larger and less sparse toward base. 

 Scutellum invisible. Elytra long, convex and declivous behind, narrowly 

 subtruncate at apex viewed posterioi'ly, a little wider than the protliorax and 

 three times as long, evenly rounded at the sides, the punctures moderately 

 coarse, deep, rounded, rather sparse, gradually closer behind ; inflexed flanks 

 with the marginal stria very feeble, punctate, visible toward base ; sublateral 

 stria distinct in more than apical half; each elytron also with three or four 

 coarse, oblique, sublateral striae toward base, of which the external appears 

 to be the internal humeral. Pi/gidium rather coarsely, very densely punctate. 

 Prosternum truncate behind, much wider than long, with a large deflexed and 

 broadly rounded apical lobe, finely, sparsely punctate ; mesosternum more 

 strongly, less sparsely punctate, not striate at apex, the lateral strise very 

 oblique from the coxae to the prosternal angles. Anterior tibiae very broad, 

 rounded externally, with a fringe of very small erect setae, not spinulose. 

 Length 1.1 mm. ; width 0.8 mm. 



California (Humboldt and Siskiyou Cos.). 



Distinguishable by its rather large size and coarsely eroded ely- 

 tral striae. It is not rare in northern California. 



B. debilitans. — Somewhat broadly oval, very strongly convex, polished 

 and dark rufo-testaceous througbout. Head Rnn\y, sparsely punctulate, more 

 strongly anteriorly. Protliorax much more than twice as wide as long, the 

 sides moderately convergent, broadly and almost evenly arcuate from base to 

 apex, the apical angles acute; marginal line acute, entire along the apex but 

 very fine ; punctures fine, even and sparse throughout. Scutellum wanting. 

 Elytra globose, twice as long as the prothorax viewed vertically, and slightly 

 wider ; sides broadly, evenly arcuate ; punctures fine but strong, rather sparse ; 

 carina of the inflexed flanks very fine aud puncto-crenulate, uniting with the 

 first sublateral stria before the apex ; disk also with an evanescent oblique 

 stria extending to the middle of the base. Pygidiuin finely, strongly, rather 

 closely punctate. Prosternmn very short and transverse, finely, S]>arsely 

 punctate, the lobe well developed, more closely punctate, finely margined at 

 apex. Meso-metasternal surface finely but strongly, sparsely punctate. An- 

 terior tibiae broad, rounded externally. Length 0.7 mm ; width 0.45 mm. 



