The Pselaphid^ of North America. 33 



d^ Transverse sulcus faint. 



Head smooth, with a deep angulated impression, occiput convex 

 not impressed. Length, 0.5 mm. - - simplex, Lee. 



c' Width of the shoulders less than that of the prothorax. 



Occiput not channelled, head distinctly punctulate; in the middle, 

 before the line of the eyes, is a rounded tubercle. 



dubiuDi, Lee. 



Occiput impressed, sulcus angulated on the frontal margin; 

 transverse pronotal channel deep, elytral lines faint. Length, 

 0.6 mm. ... ... americatiutn, Lee. 



T. FOVEicoLLE, Lcc. (Leconte's description.) Elongate, 

 bright rufo-testaceous, very slightly pubescent. 



Head convex, smooth, with a fovea each side above the 

 eyes, and a transverse angulated impressed line. Prothorax 

 longer than wide, convex, with three sub-basal foveee, con- 

 nected by a transverse impressed line; the lateral foveje are 

 larger, and situated on the declivity of the sides. Elytra 

 bifoveate at the base, sutural line deep, dorsal one short. 

 AntcnncB with ninth and tenth joints transverse. Length, 

 0.9 mm. 



Habitat. Massachusetts. Unknown to us. 



T. GLOBiFER, L.ec. Yellowish brown, impunctate, form 

 slender, pubesence thin, inconspicuous. Length, 1.5 mm. 



//£:«(/ comparatively small, with two large foveee behind 

 and between the eyes, the connecting sulcus semi-circular; 

 eyes small, oblong. Antennce very little longer than the head, 

 the basal joint C3'lindrical, longer than the second; third to 

 ninth very small, gradually transverse; the tenth wider, disk- 

 shaped; the last very large, oval, nearly half as long as the 

 funicle. The last joint of the maxillary palpi is also very 

 large. Prothorax as wide as long, less convex, rounded at 

 the sides, narrower behind, with the lateral foveas connected 

 by an arcuate sulcus. Elytra longer than wide, widest be- 

 hind the middle, convex, dorsal impression short, sutural line 

 deep. Abdomen not carinate at the base. 



Habitat. Georgia, South Carolina. 



