S80 Trans. Acad. Sci. of St. Louis. 



JSuUssui, there being a deep arcuate punctured groove near 

 each side, a coarse setigerous puncture anteriorly at lateral 

 fourth and another near each basal angle. The extremely 

 coarse, deep and sparse punctures of the head, aggregated 

 into punctured grooves laterally, seems to be a character 

 peculiar to Eulissus. The elytra have each a medial series of 

 distinct punctures and are otherwise wholly sculptureless, ex- 

 cept in a broad line along the elytral suture and on the de- 

 flexed flanks, where the punctures are irregularly arranged. 

 Dr. Sharp was greatly in error in uniting Eulissus with 

 Xantholinus, as the two genera are only related in the charac- 

 ters of the subtribe. This may be appreciated at once on 

 observing the structure of the mandibles in the two genera. 

 Our single species may be briefly described as follows : — 



Moderately stout and convex, parallel, highly polished, deep black, the elytra 

 throughout pale rufous, the ecutellum black; antennae ferruginous, with 

 the first three joints black, the legs piceous-black, the tarsi paler; head 

 rather longer than wide, parallel and very feebly arcuate at the sides, 

 the base broadly arcuate, with the angles obtuse though scarcely 

 rounded; antennae but little longer than the head; prothorax some- 

 what shorter and distinctly narrower than the head, elongate, the ante- 

 rior angles distinct, the sides converging thence to the base, becoming 

 broadly and feebly sinuate posteriorly; elytra slightly shorter and wider 

 than the prothorax but not quite as wide as the head; abdomen floely, 

 rather sparsely punctured, less distinctly in a broad area along the mid- 

 dle. Length 9.5 mm.; width 1.4 mm. Rhode Island and New Jersey. 



fnlgldns Fab. 



There is no perceptible difference of any kind between the 

 American exam{)les, which are rather rare, and the European, 

 indicating that the species is a recent introduction to our 

 fauna through commercial intercourse. 



Nudobius Thoms. 



This genus is far more developed in temperate North 

 America than in Europe and probably originated on this con- 

 tinent. The species are rather more slender than those of 

 Eulissus and are usually black with pale elytra, but in the 

 European collaris, the prothorax is testaceous and the elytra 

 black, this being a very exceptional form. In many charac- 



