The Pselaphid^ of North America. 283 



cence inconspicuous. Antennae, palpi, and legs reddish-brown. 

 Length, 1.3 mm. Plate IX., Fig. 58. 



Head small, frontal margin arcuate, depressed in the mid- 

 dle. Antennce not as long as the head and prothorax, first 

 joint cylindrical, second oblong, rounded, as thick as the first, 

 third to fifth smaller, nearly globular, the sixth slightly larger. 

 Seventh and eighth smaller, globular, ninth, tenth, and eleventh 

 forming a club half as long as all the others taken together. 

 The ninth is obconical, double the length and thickness of the 

 eighth, tenth of the same form, the last oval not acute at tip. 

 These three terminal joints gradually increase in thickness, 

 the eleventh being three times as thick as the ninth and as 

 long as the preceding ones. Prothorax as long as the head 

 (including the eyes) is wide, and about one-sixth broader, 

 ver} convex, the lateral fovece not in quite full view from 

 above. Elytra one-half longer than the prothorax, nearly the 

 same across the prominent shoulders, and the apical width 

 exceeding by one-third the sutural length. Sutural lines 

 parallel, discal lines deep near the base, fine behind, entire, 

 slightl}^ arcuate, convergent from the base to the tip. Abdomen 

 short, the basal segment one-fourth as long as wide, the 

 carinas conspicuous, including nearly one-half of the segmental 

 width. 5 with the basal abdominal segment depressed later- 

 ally next to the broad margin, elevated and broadly lobed 

 posteriorly; in the middle of the posterior limit it is minutely 

 foveate. Second dorsal depressed at base, with a large rather 

 shallow semicircular fovea at middle, enclosing five deep per- 

 forate dark punctures arranged in a semicircle, the center of 

 which is occupied by a much larger dark fovea. The third 

 segment shows only two small dark punctures. The last is 

 roundly impressed and tuberculate at base. Legs short. 



Habitat. New York, New^ Jersey, Long Island. 



B. FOVEATA, Lee. Umber brown, polished, impunctate. 

 Length, 1.9 mm. 



Head with the frontal margin arcuate, tubercles rounded 

 outside, space between them concave, fovete very large, the 



