66 Natural History Bulletin. 



depressed; sutural lines arcuate, discal lines two-fifths as long 

 as the suture. Abdomen not longer than the elytra, two dor- 

 sal segments with approximate, divergent carince. The 3 

 characters are as follows: a deep transverse impression of the 

 penultimate segment, the third and fourth, sinuate behind. 

 Habitat. Maryland, Virginia. 



E. DiFFiciLis, Lee. Red, feebly and sparsely punctulate, 

 pubescence fine, short, and dense. Length 1.2 mm. Plate 

 XL, Fig. 109. 



Head large, as long as wide, eyes small, prominent, tempora 

 much longer than the eyes, convergent; base sinuate, with a 

 median impression; vertex impunctate, highly polished, occip- 

 ital fove^ small, pubescent, situated near and behind the 

 middle, slightly more distant from one another than from the 

 eyes, circumambient sulcus narrow, the parabolic very wide 

 and deep behind the frontal ridge; supra-antennal tubercles 

 very large, angulated externallv. Antennce one-third longer 

 than the head, slender, club large, ninth joint not longer than 

 the eighth, twice as wide as long; tenth one-half longer and 

 wider than the ninth; the last joint very slightly wider than 

 the tenth, nearly globular, annulate and acuminate at the tip. 

 Prothorax narrower than the head, slightly wider than long, 

 widest in the anterior third, sides, behind the point of the 

 greatest width, convergent and broadly sinuate; base three- 

 fourths as wide as the pronotum, and one-half wider than the 

 neck; disk convex, with a deep, elongated, median puncture 

 in the middle; one-fourth from the base is a narrow, feebh' 

 impressed, transverse sulcus, connecting a large, deep, median 

 impression with the circular, pubescent, lateral fovece near and 

 behind the middle. Elytra., across the prominent shoulders, 

 slightly wider than the prothorax and as wide as the head, 

 sides parallel, arcuate; disk longer than wide, about as long 

 as half of the head and the prothorax together, rather flat, 

 sutural lines close, the lateral ones short, broadly impressed. 

 Abdomen not narrower than the elytra, the first two segments 



