198 Trans. Acad.. Sci. of St. Louis. 



tral of the male feebly ainuato-truncate and very slightly impressed, 

 the sixth triangularly emarginate, the notch much less deep than in 

 punoCatus and with its diverging sides not at all sinuate posterioFly, its 

 apical angle somewhat less than right and but slightly rounded. Cali- 

 fornia (San Bernardino Mts.) montanas Fall 



Prothorax always distinctly narrower than the head , . . . 6 



6 — Head unusually developed, as wide as long or very nearly so — estimat- 



ing from the line of supra-antennal tubercles 7 



Head narrower, more or less distinctly longer than wide 8 



7 — Color pale piceous-brown, the head and abdomen blackish; form rather 



stout, the surface shining, the micro-reticulation subobsolete ; head 

 large, fully as wide as long, the eyes well developed, the sides behind 

 them parallel and straight, the basal angles broadly rounded, the 

 punctures minute but deep, moderately close-set; antennae moderate; 

 prothorax small, much narrower than the head and about equally long, 

 only a little longer than wide, the sides very feebly converging from the 

 obtuse but distinct apical angles to the base and broadly feebly arcuate, 

 the punctures coarse, sparse and rather strong; elytra parallel, about 

 a fifth longer than wide, two-fifths wider and nearly one-half longer 

 than the prothorax, wider than the head, finely and not densely punc- 

 tured; abdomen much narrower than the elytra and scarcely wider than 

 the head. Male sexual characters of the punctatus type, the notch of 

 the sixth ventral being similar, the fifth segment having abroad median 

 lobe which is evenly rounded throughout its contour and shorter than 

 in punctatus, the surface strongly, longitudinally impressed in about 

 apical half. Length 3.2 mm. ; width 0.6 mm. California (Sonoma Co.). 



sonomae n. sp. 



Color uniform pale piceous-brown throughout, except the head and abdo- 

 men which are black; surface of the head andpronotum alutaceous, the 

 fine reticulation strong; head well developed, scarcely visibly elongate, 

 the eyes rather large, the sides behind them parallel and straight only 

 for a very short distance, then rounding into the very broadly rounded 

 basal angles, the punctures very minute and sparse; prothorax rela- 

 tively larger and more elongate than in sonomae, though distinctly 

 narrower than the head, about a fourth longer than wide, subparallel 

 and nearly straight at the sides, the obtuse though scarcely rounded 

 apical angles at about a fifth of the length from the apex, the punc- 

 tures moderately large but sparse and extremely feeble, almost com- 

 pletely obliterated; elytra distinctly elongate, parallel, two-fifths wider 

 and a little less than one-half longer than the prothorax, moderately 

 strongly, subasperately and not very densely punctate. Male unknown. 

 Length 2.9 mm. ; width 0.55 mm. Washington State (Spokane). 



pngetanus n. sp. 



Color deep black throughout, the legs piceous-black, the tarsi and antennae 

 paler, rufous; surface strongly shining, the reticulation obsolescent; 

 head large, very nearly as wide as long, the eyes only moderately large, 

 the sides behind them parallel for a rather long distance, the angles 

 somewhat broadly rounded; antennae rather short, gradually thicker 

 toward tip; punctures fine, very deep and close -set throughout; pro- 

 thorax somewhat distinctly narrower than the head, slightly longer 



