The Pselaphid^ of North America. 265 



half times as long as the prothorax, shoulders high, width of 

 elytra across the tip a little more than twice the length of the 

 head. Disk slightly convex, dorsal and sutural lines sharp, 

 not deeply impressed, faintly punctulate, sides suddenly decliv- 

 ous, very slightly arcuate. Abdomen broadly margined, first 

 segment two and one-half times as broad as long, the long 

 carinas including nearly one-half the width. Antennce as long 

 as the head and prothorax, first and second joints subcylin- 

 drical, third to sixth subequal, globular, seventh to ninth 

 gradual!}^ increasing in width, tenth one-half longer than wide, 

 ovate. Legs slender, the 3 intermediate thighs slightly 

 gouged on the lower fourth, leaving an inconspicuous spindle, 

 the tibia slightly dilated from the middle, tarsi thicker than in 

 the other species. 



Habitat. United States south of the Ohio river. 



D. DISCOLOR, Brendel, n. sp. Elongate, piceous-brown, 

 impunctate, abdomen darker than the head and prothorax, 

 elytra bright red, antennae red at base, the club brown. Legs 

 reddish -yellow, palpi sulphureous. Pubescence fine and 

 scanty. Length, 1.5 mm. 



Head with the vertex quadrate, evenly convex, inter-ocular 

 foveas large, nude, mutually three times as far distant as is 

 either from the eye. Between them is a small punctiform 

 impression. A very shallow longitudinal impression origi- 

 nates in the lateral fovese each side and separates the middle 

 of the front from the sides. Eyes large, very near the lateral 

 margin of the vertex. Clypeus margined anteriorly. Antennce 

 as large as the head and half the prothorax, the two basal 

 joints equal in width, the second shorter, third to seventh 

 obconical, subequal, the third as long as the second; seventh 

 half as long, transverse, eighth and ninth transverse, trape- 

 zoidal, rapidly increasing in width, last joint ovate, as long as 

 the three preceding. Prothorax very convex, little wider 

 than long, sides rounded, arcuate, basal fove^ nude, very 

 large. Elytra with the shoulders moderately prominent, the 

 width across them equal to the length of the suture and one- 



