The Pselaphid^ of North America. 73 



vated above and below the eye, sides of the vertex straight, 

 convergent to the frontal margin; supra-antennal tubercles 

 strong, angulate; frontal margin convex in the middle and 

 declivous at the tip; in a line with the anterior limits of the 

 eyes are two pubescent fovccC, mutuallv two-thirds more dis- 

 tant than either from the eye, connected by a parabolic sulcus; 

 the included space impunctate; labrum truncate anteriorly. 

 AntenncB not as long as the head and prothorax together, first 

 and second joints stout, ovate, nearly equal; third to seventh 

 small, gradually transverse; eighth to tenth gradually increas- 

 ing in width, nearly equal in length; eleventh sub-globular, 

 annulated near the acute tip. Last joint of the maxillarv pal- 

 pus thick, one-sided, acute at the tip. Prothorax widest 

 across the anterior third where the width equals that of the 

 head, as wide as long, evenl}- arcuate at the sides; posteriorly 

 the sides are nearly straight, forming a slightly obtuse angle 

 with the base; disk polished, impunctate, convex, with an 

 abbreviated, linear sulcus just before the middle and a trans- 

 verse, slightly angulated groove one-fourth from the base, 

 connecting the pubescent lateral fovese; the space behind the 

 transverse sulcus is rough, with a median carina. Elxtra^ 

 across the prominent shoulders, as wide as the prothorax, 

 sides divergent, moderately arcuate, disk feebly convex, indefi- 

 nitely punctulate, wider than long, and one-fourth longer than 

 the pronotum; base bifoveate, the sutural lines parallel, the 

 discal impression conspicuous, more than one-third as long as 

 the suture. Abdomen short, broad, border retuse, segments 

 sub-equal, the first and second with two short, divergent 

 carinjK at the base. Legs long, thighs clavate, tibire dilated 

 toward the tip. ?, form more slender, longer than the male, 

 eyes rudimentary, consisting of three or in some cases two 

 ocelli; the elytra are comparatively longer, the sides more 

 arcuate, the abdomen longer, and the tibiae not dilated. 

 Habitat. Virginia. 



