356 A Preliminary Monograph of the 



punctate, the punctures separated by a little more than their own 

 widths, suddenly larger, shallow, variolate, and polygonally crowded 

 near the edge ; impressions broad and distinct. Elytra quadrate, very 

 slightly wider and nearly one-half longer than the prothorax, feebly 

 impressed near the suture, rather finely and densely punctate; punc- 

 tures separated by but slightly more than their own diameters. Ah- 

 domen parallel, distinctly narrower than the elytra; sides very feebly 

 arcuate; border moderate; surface finely reticulate, minutely and rather 

 densely punctate. Length 2.8 mm. 



Pennsylvania (Allegheny Co. 1). Dr. Hamilton. 



Easily distinguishable by its dense pronotal and abdominal 

 punctuation, and distinct and uninterrupted pronotal impres- 

 sions. 



32 T. agonus n. sp.— Slender, rather depressed and linear, piceous; 

 abdomen black; legs and antennae dark piceous-brown; pubescence 

 short, rather coarse and not very dense; integuments feebly shining. 

 Head scarcely perceptibly narrower than the prothorax, wider than 

 long, rather convex, densely punctate; punctures moderately fine, deep, 

 sparser in the middle ; prominences small, moderate ; eyes small, 

 sHghtly convex ; tempora fully as long as the eye, evenly rounded and 

 distinctly more prominent; antennae short, about as long as the head 

 and prothorax, not very robust, moderately incrassate; joints two to 

 four very rapidly decreasing in length, the former scarcely twice as 

 long as wide, the latter distinctly transverse, tenth one-third wider than 

 long. Prothorax short, nearly three-fifths wider than long, widest 

 just before the middle, where the sides are very broadly, evenly arcuate 

 and coarctate to the apex, more convergent and more feebly arcuate to 

 the base, which is strongly arcuate, the angles being very obtuse and 

 scarcely at all observable; apex much wider than the base, broadly, 

 distinctly arcuate; angles distinctly rounded; disk distinctly bi-im- 

 pressed, the impressions parallel and not interrupted, densely and some- 

 what coarsely punctate; punctures somewhat variolate, very distinct, 

 generally separated'by about one-third their own diameters, but finer 

 and sparser along the middle; surface broadly, indefinitely impressed 

 laterally. Elytra scarcely as long as wide, one-fourth wider and three- 

 fourths longer than the prothorax, distinctly impressed near the suture 

 toward base, somewhat coarsely punctate, the punctures equal in size 

 to those of the pronotum, deep and generally separated by their own 

 diameters. Abdomen slightly narrower than the elytra, parallel; sides 

 straight; border moderate; surface minutely and feebly reticulate, very 

 minutely and rather sparsely punctate. Length 1.9 mm. 



Tennessee 1. Mr. Otto Lugger. 



A distinct species which may be readily known by its small^ 



