COLKOPTERA. 97 



late externally, each crossed by a minute chann(^l ; antennae robust, as long 

 as the elytra, club relatively slender, second joint but sliglitly wider than 

 the following, joints nine and ten sub-equal in length, distinctly longer than 

 the eighth, the former three-fourths wider than long,, and two-thirds as wide 

 as the latter, eleventh but slightly wider than the tenth, much elongated, 

 acuminate ; under surface of the head with a dense pad of erect sensitive 

 setae. Prothorax large and robust, widest just behind the middle, where 

 it is as wide as long, and slightly wider than the head ; sides evenly and 

 rather feebly arcuate anteriorly, nearly straight, minutely and irregularly 

 denticulate posteriorly ; apex two-lilths as long as the pronotal width, and 

 two-thirds as long as the base ; disk very convex, polished, finely, and 

 sparsely asperate, having a narrow, strongly marked medial canaliculation, 

 extending with equal width from very near the apex to the basal margin, 

 and which is crossed at one-fourth the length from the base by a transverse 

 straight channel of equal width and depth, which terminates laterally in 

 rather small deeply impressed spongy-pubescent foveae. Elytra at base 

 scarcely wider than the pronotum ; sides rather strongly divergent poste- 

 riorly and strongly arcuate ; disk very slightly shorter than wide, but 

 slightly longer than the pronotum, very convex, shining, distantly and 

 evenly asperate ; sutural striae strong, close> arcuate ; lateral striae nearly 

 obsolete. Abdomen as wide as and shorter than the elytra; sides parallel 

 and slightly arcuate ; margin narrow and flat ; surface very strongly convex, 

 polished ; first dorsal with two rather long, fine, divergent carinae. Legs 

 rather long and slender ; prosternum transverse, very flat ; anterior coxae 

 conical and very long Length 1.1—1.2 mm. 



Detroit, Michigan, 1; Odenton, Maryland, 1; Georgia, 2; Cres- 

 cent City, Florida, 1. 



This species, the description of which is taken from Dr. LeConte's 

 type, a male, is so aberrant, especially in the structure of the head, 

 anterior coxae, and in its short, broad, very convex abdomen, that it 

 is questionable whether it is advisable to retain it in the present 

 genus. The large lunate penultimate segment of the abdomen in the 

 male is broadly depressed in the middle; the apical segment is partly 

 enclosed by the preceding, as is usual, and is slightly wider than long. 

 The species is widely diffused, but is apparently very rare. 



2. E. pumilus Lee. — Bost. Journ. VI. p. 1 06. — Form moderately robust. 

 Pubescence somewhat sparse, very short, recumbent, fine, and not conspicu- 

 ous. Color of entire body ferruginous, legs and antennae paler. Head 

 rather small; eyes rather large and prominent; genae not prominent, as 

 long as the eye ; interocular surface confusedly and coarsely granulose, 

 shining, raised abruptly far above the eyes, nearly flat above, narrowed 

 anteriorly, strongly sinuate at the middle of the base ; having two very 

 minute, round, spongy-pubescent fovene at two-fifths the length from the 

 base, mutually much more distant than either from the eye, connected by an 

 anteriorly arcuate parabolic channel of slight deptli, as long as wide ; inter- 



