662 Coleopferological Notices, IV. 



rately deep dilated fovea, the intervals not perceptibly punctulate, 

 the surface glabrous, excepting three or four long slender white 

 squanuiles widely dispersed laterally, and a few also at the base of 

 the second and third intervals. Prosternum glabrous throughout, 

 the coxtB more widely separated than in efasus. Length 2.2 mm ; 

 width l.l mm. 



Missouri (St. Louis). Cab. LeConte. This remarkable species 

 is still represented as far as I know by the unique type. 



EISONYX. 



LeConte— Trans. Am. Ent. Soc, VIII, p. 216. 



This is perhaps the most aberrant and specialized baride genus 

 within our faunal limits. In general form it is totally unlike our 

 other genera, but is satisfactorily connected in this respect by Oomor- 

 ])hidius. The original diagnosis of LeConte will serve for its re- 

 cognition, but is greatly misleading in several important points. 

 The middle and hind tibiae are, for example, not in the least conical 

 in outline, but are very thick and quite peculiar in structure, indi- 

 cating perhaps a burrowing habit ; they are strongly carinate ex- 

 ternally near the base, then straight for a short distance, then feebly 

 bent outward, becoming distinctly dilated and densely bristling 

 with fulvous setae. The el3'tral strife are not by any means replaced 

 by series of coarse punctures, as stated in the original descrip- 

 tion, the strife being all but completely obsolete, but marked by 

 series of exceedingly minute feeble and distant punctures, and ter- 

 minating at base in larger deep foveas as in Oomorphidius ; the 

 large deep circular perforate and widely distant punctures referred 

 to by the author, are unevenly spaced along the middle of the in- 

 tervals. Each of these large punctures bears a very small slender 

 seta, but some of them, which are widely isolated and a little larger 

 than the others, bear instead a single large white recumbent scale. 



The beak is extremely thick, short, feebly arcuate and scarcely 

 three-fourths as long as the prothorax, bristling with coarse erect 

 setse at the sides toward apex, and the antennae are inserted slightly 

 beyond the middle, the scrobes being very oblique. Scutellum 

 minute, rather deeply seated, feebly tumid and nude. 



1 Eisonyx crassipes Lee. — Trans. Am. Ent. Soc, VIII, p. 217. 



Rhomboidal, widest between basal third and fourth of the elytra, 

 black, rather dull, finely alutaceous and smooth throughout, convex, 



