100 NORTH AMERICAN 



spongy-pubescent foveae, mutually one-third more distant than either from 

 the eye, connected by an anteriorly arcuate convergent channel, which near 

 the foveae is very feebly impressed, but which, behind the frontal ridge, is 

 longitudinally widened, much more deeply impressed, and nearly transverse ; 

 supra-antennal tuberculations large, callous, and prominent, angulate ex- 

 ternally, each having behind the callosity a small, round puncture ; con- 

 nected by the feebly arcuate, rounded, transverse, frontal ridge ; antennae 

 one-third longer than the head, somewhat slender, club robust, ninth joint 

 slightly longer than the eighth, twice as wide as long, three-fourths as long 

 and wide as the tenth, eleventh as wide as long, slightly wider than the 

 tenth, sides nearly parallel, abruptly and acutely produced in the middle 

 at apex ; last joint of the maxillary palpi rather long, slender. Prothorax 

 widest just before the middle, where the sides are just visibly convergent 

 and feebly arcuate, then much more strongly convergent and feebly sinuate 

 anteriorly, and moderately convergent and nearly straight posteriorly, feebly 

 and minutely sinuate just behind the middle; apex fully one-half as long 

 as the pronotal width, and three-fourths as long as the base; disk strongly 

 convex, polished, impunctate, slightly narrower than the head, and dis- 

 tinctly longer than wide; having just before the middle an elongated, oval, 

 median puncture, and, at one-fifth the length from the base, a transverse, 

 posteriorly cusped, very feeble groove, dilated at the point into a deep punc- 

 tiform impression, and terminating at the sides in two small, very deeply 

 impressed foveae. Elytra at base distinctly wider than the pronotum ; sides 

 vfry feebly divergent posteriorly, and moderately arcuate ; disk slightly 

 longer than wide, rather feebly convex, polished, impunctate; sutural striae 

 deep, arcuate, lateral two -fifths as long as the elytra, distinct. Abdomen 

 very slightly narrower than, and equal in length to the elytra; sides just 

 visibly divergent posteriorly and straight ; border wide and very feebly in- 

 clined ; surface rather convex, shining, very slightly and sparsely asperate; 

 first three dorsal segments equal in length ; first two with two rather close 

 divergent carinae, which are rather long and prominent. Legs rather long 

 and slender. Length 1.3 mm. 



Deer Park, Maryland, 1. 



The description is taken from the uiii(|ue specimen which is a 

 male ; the terminal ventral sejxinent is strongly convex, and the 

 penultimate has a very deep transverse impressed channel; the poste- 

 rior edges of the tiiird and toiirtli S('i;ments are sinuate and produced 

 in tlie most complex and inde^crihuhle nuinner. The sjjccies is very 

 distinct in appearance, because of the peculiar conformation of the 

 head, with its very long genae, and also on account of the elongated 

 prothorax. 



5. E. diflicilis Lee. — Bost. Journ. VI. p. 100. — Form slender; sides 

 parallel. Pubescence very fine, short, pale, moderately plentiful ; color of 

 body rufo-testaceous ; legs and tips of antennae just visibly paler. Head 

 rather large, as long as wide ; eyes rather small, but prominent ; genae 

 large, convergent behind, much longer than the eye ; liase sinuate in the 



