186 Trans. Acad. Set. of St. Louis. 



equal in width to the prothorax, as wide as long, straight and parallel 

 at the sides, the basal angles rather broadly rounded, the punctures fine 

 and somewhat sparse; prothorax a little wider than long, feebly obtrap- 

 ezoidal, the angles moderately rounded, the punctures not conspicu- 

 ous; elytra but little longer than wide, a fourth wider and one -half 

 longer than the prothorax, rather strongly punctured, shining, the sides 

 feebly diverging from base to apex. Length 2.9 mm.; width 0.53 mm, 

 California (southern), — Mr. Fall , mollis n. sp. 



Body very slender, parallel, piceous -black, the prothorax, legs and antennae 

 dark testaceous, the elytra piceous -black, pale and subflavate in apical 

 third or fourth; head rather wider than the prothorax, not densely 

 punctate, shining, of the usual outline; prothorax rather small, incon- 

 spicuously punctured, feebly obtrapezoidal, the angles rather well 

 rounded, somewhat wider than long; elytra narrow and much elon- 

 gated, a fifth wider and three-fourths longer than the prothorax, rather 

 strongly and closely punctured but distinctly shining as in the preced- 

 ing. Length 2.6 mm.; width 0.45 mm. California (southern), — Mr. 

 Fall exilis n. sp. 



13 — Parallel, moderately stout, black, the head piceous, the prothorax^ 

 elytra, legs and antennae pale brown, the elytra still paler and more 

 flavate at the apical margin ; surface somewhat dull in lustre ; head 

 well developed, rather wider than long, equal in width to the protho- 

 rax, parallel and very feebly arcuate at the sides, with the angles rather 

 narrowly rounded, the punctures fine but strong and close-set; pro- 

 thorax a little wider than long, feebly obtrapezoidal with the sides 

 nearly straight and the angles moderately rounded, the surface punc- 

 tured like the head but still more densely ; elytra not distinctly wider 

 than the prothorax and scarcely a third longer, the sides straight and 

 feebly diverging from the base, densely and subrugosely punctured; 

 abdomen but very slightly narrower than the elytra. Length 3.2 mm. ; 

 width 0.6 mm. California (Sissou), — Mr. Wickham- 



brevlpennis n. sp. 



Parallel but somewhat less stout and less densely punctate, similar in colora- 

 tion, except that the prothorax and elytra are darker and more piceous; 

 lustre slightly shining; head narrower, rather longer than wide, slightly 

 narrower than the prothorax, parallel and nearly straight at the sides, 

 the basal angles rather more broadly rounded, the punctures coarse and 

 well separated; prothorax as in brevipennis but with the angles more 

 broadly rounded and the punctures smaller than those of the head and 

 only moderately close-set; elytra equal in width to the prothorax and 

 barely a fifth longer, quadrate, with the sides very feebly diverging 

 from the base ; abdomen equal in v^Bdth to the elytra. Length 3.4 mm. ; 

 width 0.57 mm. British Columbia (Yale), — Mr. Wickham. 



qnadripennis n. sp. 



The described species included in the table were originally 

 made known by the writer (Bull. Cal. Acad. Sci., II, 1886) 

 in an unsystematic manner and without adequate knowledge 

 of their mutual affinities. The systematic arrangement of the 



