198 Trans. Acad. Sci. of St. Louis. 
tral of the male feebly sinuato-truncate and very slightly impressed, 
the sixth triangularly emarginate, the notch much less deep than in 
punctatus and with its diverging sides not at all sinuate posteriorly, its 
apical angle somewhat less than right and but slightly rounded. Cali- 
fornia (San Bernardino Mts.). ..cccesececceccecseceeee, mOntanus Fall 
Prothorax always distinctly narrower than the head. .cececscsccrececcreceld 
6 — Head unusually developed, as wide as long or very nearly so —estimat- 
ing from the line of supra-antennal tubercles.......csceccccsecseeee 7 
Head narrower, more or less distinctly longer than wide......+-.eccersss 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 a broad median 
- lobe whick is evenly rounded throughout its contour and shorter than 
in punctatus, the surface strongly, longitudinally impressed in about 
apical half. Length3.2 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 and pronotum 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 0.55mm, Washington State (Spokane). 
pugetanus 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 
