io6 Memoirs on the Coleoptera 



met-episterna three-fifths longer than wide. Length (9) 7.8-8.3 

 mm.; width 3.1-3.3 mm. California (Truckee).. . .tahoense n. sp. 



8 — Body broader and oblong in form, somewhat as in the preceding 

 section 9 



Body narrow, notably elongate and more convex, the prothorax relatively 

 wider 10 



9 — Elytral surface longitudinally feebly swollen along the median line 

 posteriorly, rather depressed, opaculate, shining anteriorly, black, 

 with green metallic lustre, sometimes subcupreous internally on the 

 elytra; under surface black, the legs piceo-rufous; head almost 

 two-thirds as wide as the prothorax, with somewhat prominent 

 eyes, the impressions parallel, with an oblique prolongation toward 

 the eyes; antennae black, thin, not quite half as long as the body; 

 prothorax two-fifths wider than long, widest before the middle; 

 sides rounded and feebly reflexed throughout, slightly oblique and 

 straighter behind, the angles very obtuse but distinct, the tips 

 often prominent; base feebly oblique at the sides, somewhat wider 

 than the distinctly sinuate apex; impressions feeble, sometimes 

 obsolete, the stria fine, almost entire; fovese large, broadly impressed, 

 finely and feebl}^ punctulate, separated from the sides but almost 

 attaining the base; elytra oblong, one-half longer than wide, almost 

 two-fifths wider than the prothorax, rapidly obtuse at apex, the 

 sinus rather long and distinct; striae fine, grooved, smooth, not 

 punctulate; intervals flat in the female, the third with five or six 

 moderate punctures, which are mostly axial; met-episterna twice 

 as long as wide. Length (9) 9.0-9.7 mm.; width 3.3-3.5 mm.; 

 California (Sta. Clara). Three female examples, sent by Dr. Smith. 

 [PI. falUanus Leng] deplanatum Men. 



Elytral surface evenly convex posteriorly as usual; upper surface less 

 depressed, shining, the elytra shining (cf) or opaculate (9), black, 

 the upper surface wholly green or with the sutural parts of the 

 elytra feebly cupreous; under surface black, somewhat viridate, 

 the legs piceo-rufous; head elongate, three-fifths as wide as the 

 prothorax, the eyes rather large and prominent; impressions and 

 antennae nearly as in the preceding; prothorax two-fifths or more 

 wider than long, widest at about the middle, the parallel sides 

 evenly arcuate from apex to base and finely though sharply reflexed; 

 basal angles very obtuse and rounded, never at all prominent at tip; 

 base oblique at the sides, much wider than the rather deeply sinuate 

 apex; surface with transverse rugulae, the impressions feeble or 

 obsolete, the stria rather fine; foveae rather short, obtusely linear 

 and deeply impressed, feebly rugulose but not punctate, separated 

 from the base and twice as widely from the sides; elytra one-half 

 longer than wide, somewhat longer in the male, two-fifths — or 

 more ( 9 ) — wider than the prothorax, parallel, rapidly obtuse at 

 apex, the oblique sinus long and feeble; striae fine, closely micro- 

 punctulate; intervals flat in both sexes, the third with very distinct 

 impressed punctures, about four in number and in general not 

 adhering closely to the striae; met-episterna fully twice as long as 

 wide; anterior male tarsi black and very distinctly dilated. Length 



