The Pselaphid.^ of North America. 247 



T. MINOR, Lcc. Black, polished, convex, coarsely pubes- 

 cent; antennae, palpi, frontal tubercles, legs, and fourth and 

 fifth abdominal segments reddish brown. Length, 1.4 mm. 

 Plate VII., Fig. 27. 



Head polished, as long as broad, tempora as long as the 

 eyes, frontal tubercles transverse, incision conspicuous. Nearer 

 to the frontal tubercles than to the eyes on each side is an 

 acute tubercle pointing outward, behind which is a punctiform 

 impression. Occiput higher than in T. hvigipalpus, longitu- 

 dinally plane, transversely convex. Palpi with the third joint 

 triangular, the sides enclosing the free and tufted angle equal, 

 shorter than the third, which is more than half the length of 

 the last joint. This joint is securiform, shortly pedunculate, 

 more than half as long as the head, broadest in the middle. 

 AntenncB slightly longer than the head and prothorax, the two 

 basal joints more robust; the first obconical, flattened above, 

 the second smaller. Joints three to seven are only about half 

 as wide as the preceding, cylindrical, very little longer than 

 wide, eighth globular, ninth and tenth subglobular, slightly 

 transverse, eleventh twice as thick as the ninth, rounded ovate, 

 and as long as the two preceding. Prothorax polished, wider 

 than long, and as long as the head, widest slightly before the 

 middle, where it is strongly arcuate; anteriorly and poster- 

 iorly it is nearly straight, slightly sinuate, disk very convex, 

 the base twice as wide as the neck. Lateral fove« rather 

 large, basal fovcce five in number, placed in a transverse row 

 ver}^ near the base, the middle one larger, along the sides 

 anterior to the lateral foveas almost imperceptibly impressed, 

 the impression visible only in a certain light. Elytra faintly 

 reticulate, as wide across the shoulders as the prothorax, and, 

 near the tip, two-thirds wider. Shoulders elevated, not prom- 

 inent laterally, disk convex both ways, sutural lines fine, not 

 deeply impressed except near the base; interval flat. The 

 basal and discal lines each originate in a fovea, the latter 

 deep, reaching beyond the middle. The declivous lateral 

 portion of the elytra is very broad, polished, impunctate. 



