The Pselaphid^ of North America. 241 



prominent, tinely facetted; tempora convergent, little longer 

 than the eyes, not convex, frontal tubercles rather short, not 

 constricted posteriorly, scissure sharp and ending in a small 

 elongate fovea one-fourth the length from the frontal margin. 

 There are two small, round, well-defined foveee in a line with 

 the anterior quarter of the eyes, separated from each other by 

 twice as great a distance as from the eyes. Clypeus with the 

 anterior margin rounded, labrum bilobed. AntciDice not quite 

 half the length of the body, the first joint cylindrical, arcuate 

 below, as long as the eye and half as thick; second joint 

 quadrate, as wide as the first, third to fifth gradually smaller, 

 quadrate, sixth to tenth gradually wider, tenth as wide as 

 the second, twice as thick as long. The last joint is pear- 

 shaped, compressed, half as long as the preceding portion of 

 the antenna;, and one-third from the apex the width is equal 

 to the length of the first three joints together; pubescence 

 sparse, surface faintly punctulate. Palpi with the first joint 

 small, cylindrical; second fusiform; third irregular globular; 

 fourth longer than the preceding joints together, cylindrico- 

 fusiform. Prothorax as wide as long, voidest a little before 

 the middle, very convex transversely, sides evenly arcuate, 

 becoming straight and convergent near the base. One-fifth 

 from the base is a small triangular fovea connected with the 

 very small, rounded, lateral fove^e by a well defined and very 

 thin slightly arcuate line. Elytra one-fifth longer than the 

 pronotum, length equal to the humeral width, shoulders with 

 small, not prominent humeral tubercles, one-fourth wider 

 across the middle than the length of the suture, disk convex, 

 pubescence coarser than on the anterior part of the body. 

 Sutural striae well defined anteriorly originating from trans- 

 verse basal impressions and obsolete posteriorly; discal im- 

 pressed line short, foveate at base, becoming obsolete one- 

 third before the middle. Dorsal segments subequal in length, 

 the basal one-fourth as long as wide, wider behind, convex, 

 sHghtly impressed at the sides of the base, and, compared 

 with the other species of this group, very moderately mar- 



