SYNOPSIS OF SPECIES OF DASYTES 185 



Pronotum about a fourth wider than long ; apex feebly arcuate ; apical 

 angles quite broadly and obtusely rounded ; sides evenly and moderately 

 strongly arcuate, serrations short and blunt ; base broadly and rather 

 strongly arcuate, rounding into the sides without basal angles ; disk 

 evenly and moderately strongly arcuate from side to side, punctures 

 moderate in size, evenly placed, separated by a distance equal to their 

 diameter, submarginal line coarse, sometimes more or kss broken ante- 

 riorly, lateral area reticulato-rugose. 



Elytra oblong, a little wider posteriorly, sides parallel, very feebly 

 arcuate, apex very broadly rounded ; punctures distinctly smaller than on 

 the pronotum, and separated by a distance equal to twice their diameter ; 

 base equal to the width of the pronotum. 



Abdomen finely and rather densely punctate; fifth segment more 

 densely and subasperately sculptured. 



Legs moderate in length and not stout ; metatarsi long and slender, 

 quite equal to the length of their tibia. 



Male. Fifth ventral segment broadly and feebly arcuato-truncate. 



Female. Fifth ventral broadly rounded at apex. 



Measurements. Length (Types), 3.8-4 mm.; width, 1.7-1.8 mm. 



Holotype, male, and allotype, female, and one paratype (male) in my 

 own collection. 



Type locality. Crystal Lake, San Mateo County, California. Col- 

 lected by myself on June 27, 1919. 



Distribution. Occurs also on Mt. Tamalpais, Marin County, Cali- 

 fornia ; captured June 25, 1920. 



Quite distinct in its large size, longer and moderately close 

 pubescence, stouter and more elongate second antennal joint ; the sub- 

 marginal pronotal line is coarse and oftentimes much broken up anteriorly. 

 It is undoubtedly closely related to shastensis Blais., which when com- 

 pared with horridulus, is smaller in size, pronotum less strongly punctured 

 in the central area, second antennal joint less elongate, less stout and 

 inclined to narrow toward the base. 



SYNOPSIS OF THE SPECIES OF DASYTES PAYK. 



Submarginal line of the pronotum feeble, frequently 'only evident as an abrupt 



division between the smooth and rugose portions of the surface 1 



Submarginal line strong, impressed and usually entire 2 



1. Elytra each with longitudinal dark vittiform lines 1. lineellus Casey 



. Elytra without vittae 1 1 



2. Pubescence distinctly intermingled with longer, erect black hairs 3 



. Pubescence not intermingled with longer, erect black hairs 8 



3. Elytral vestiture blackish throughout 2. hudsonicus Lee. 



