■Goleopterological Notices, VII. 311 



gense prominent, obtusely and deeply emarginate ; antennae f as 

 long as the body, slender, the basal joint stout, obconic, as long 

 as the next two, the seta nearly at the apex, Prothorax as long 

 as wide, inflated and broadly rounded anteriorly, constricted at 

 basal sixth, the sides thence slightly divergent to the basal margin, 

 the latter as wide as the head, the angles less than right but blunt ; 

 reflexed margin fine ; impressions strong ; anterior margin 

 double. Elytra strongl^^ convex, ^ longer than wide, nearly 3 

 times as long as the prothorax and 2|- times as wide, oval, 

 feebly shouldered ; striae fine, with moderate, rather shallow and 

 uneven punctures, broadly confused toward the sides. Length 

 15.0-lY.O mm.; width 6.Y-7.4 mm. 



California (near San Francisco). The male has the second and 

 third joints of the anterior tarsi coarsely and not ver}'' densely 

 squamulose beneath throughout, the first with a small terminal 

 pad and the fourth spinose with some longer hairs in addition. 

 The intercoxal plate of the mesosternum is deeply and almost 

 evenly concave throughout, emarginate behind. The original de- 

 scription of Harris, founded upon Oregon specimens, states that 

 the elytra have a narrow blue margin ; this is not recognizable in 

 any individual of the present group which I have seen. 



I have before me a variety of this species in which the elytral 

 striae, instead of being uniform, are alternately more approximate, 

 the broader intervals with subdisconnected series of punctures. 



2. B. basalis n. sp. — Moderately ventricose, shining. Head stout, moder- 

 ately elongate, the longitudinal crest irregular, tuberculiform anteriorly, then 

 depressed, finer and more acute, finely interrupted by a V-shaped sulcus just 

 before the eyes, immediately behind which it assumes the form of a strongly 

 elevated double tubercle, the basal tubercle pronounced and overhanging the 

 deep nuchal sulcus, the posterior margin of the latter indented at the middle ; 

 supra-orbital ridges strong, the antennal prominences very pronounced and sep- 

 arated from the crest by a profound excavation ; antennae % as long as the body, 

 slender, the basal joint very stout, obconic and unusually long; gense very 

 prominent, with a large oblique incisure. Prothorax tumid, a little wider 

 than long, inflated and rounded anteriorly, constricted at basal fifth, the sides 

 thence straight and divergent to the basal margin, which is as wide as the 

 head ; reflexed margins fine ; impressions deep ; apical margin very strongly and 

 broadly double, with longitudinally ruguliform polished sculpture. Elytra 

 elliptical, slightly full toward base, ^5 longer than wide, nearly 3 times as 

 long as the prothorax and 2J4 times as wide ; disk strongly convex, with 

 rather fine but impressed and moderately strongly punctured striae, which are 

 alternately more approximate, the striae of the broader intervals interrupted ; 



