POGONIN.E 4 01 



Form less parallel, the anterior parts relatively smaller, body smaller in 

 size, similar in the deep black color, the surface slightly less shining; 

 head not quite so large, though two-thirds as wide as the prothorax, 

 less broad at base, the eyes more convex and distinctly more prom- 

 inent; sulci very broad and deep, parallel; antennae nearly similar; 

 prothorax slightly though more evidently wider than long, in gen- 

 eral similar to that of rectns, though relatively smaller in size and 

 with the apical angles less conspicuously lobed, the sides basally more 

 distinctly sinuate and the inner fovea shallower and less definite, 

 the outer an almost similar short, finely and feebly incised line; 

 elytra similar but narrower, less obtuse at apex and fully two-fifths 

 wider than the prothorax, the striae finer but more evidently im- 

 pressed, the outer striae less obsolete and the punctulation very fine 

 and feeble. Male with the anterior tarsi very moderately inflated, 

 the tibiae apically more bent, the femora not dentate beneath; pos- 

 terior tibiae less sigmoid and with less conspicuous hairs within, the 

 trochanters gradually finely aciculate and four-fifths as long as the 

 femora; in the female they are more rapidly and obtusely pointed 

 and two-fifths as long as the femora. Length (6cf, 89) 12.0-13.0 

 mm.; width 4.1-4.5 mm. California (Mokelumne Hill, Calaveras 

 Co.) and Nevada (Reno) sierranus n. sp. 



Form much more abbreviated and very much smaller in size, similar in 

 color and lustre to the preceding; head nearly four-fifths as wide as 

 the prothorax, with notably convex and prominent eyes, the coarse 

 sulci divided each into two large deep fovese in the type; antennae 

 black, rather thicker and distinctly shorter than in either of the pre- 

 ceding, as seen especially in the shorter third joint; nuchal constric- 

 tion shallow, with minute sparse punctulation; prothorax in. nearly 

 all respects as in sierranus. except that the inner shallow fovea is 

 more sharply defined and the outer one a deeper and more conspicu- 

 uous short incised line, and also that the basal margin is slightly 

 beaded toward the sides; elytra similar but very much shorter, not 

 quite one-half longer than wide, one-half wider than the prothorax. 

 Male with the anterior femora very obtusely angulate at the middle 

 beneath, the tibiae but feebly arcuate distally and the tarsi scarcely 

 at all dilated; posterior tibiae feebly sigmoid, distinctly pubescent 

 within and with the trochanters rapidly finely aciculate distally and 

 scarcely more than two-thirds as long as the femora. Length (cf ) 

 9.0 mm.; width 3.7 mm. Nevada (Reno). One example. 



breviusculus n. sp. 



7 Head, exclusive of mandibles, fully as wide as long, the neck very 

 short, the mandibles very small, acute though only feebly inflexed 

 at tip. Body rather narrow, feebly depressed, black in color, the 

 legs black, the trochanters rufous; head three-fourths as wide as. 

 the prothorax, the eyes notably prominent, the sulci long, deep, 

 slightly converging, extending beyond the middle of the epistoma; 

 antennae moderate, rather slender, black; prothorax two-fifths wider 

 than long, widest just before the middle, slightly narrowed thence 

 to the broadly rounded apical angles, oblique and sinuate poste- 

 T. L. Casey, Mem. Col. VIII, Oct. 1918. 



