411 REVISION OF THE ELATERID.E 



One specimen, Ohio, Dr. Schaum. The robust subcylindrical form gives it a strong 

 resemblance to the species of the preceding genus, from which it differs principally in 

 having the plates of the posterior coxa) not dilated internally, and the fourth joint of the 

 tarsi slightly lobed. It is awkward that the specific name should belong to a species 

 with brown antenna). 



Emathion Lap. 



1. E. at r op os, elongatus, postice paulo angustatus, nigro-piceus, tcnuiter fulvo-pubescens, capite 

 thoraceque rufo-piceis, scabris, hoc latitudine non breviore, lateribus ante medium rotundatis, angulis 

 posticis mediocribus acutis, canaliculato, utrinque ante medium foveato, et pone medium transversim 

 impresso, elytris scabris, tenuiter fere obsolete striatis. Long. "32. 



Lee. Proc. Acad. Nat. Sc. 6, -17. 



Eucnemis atropos Say, Trans. Am. Phil. Soc. 6, 187. 



One specimen, Louisiana, Dr. Schaum. The third joint of the antennae is longer than 

 the fourth, and the last six joints are slightly enlarged: the last being, probably, a cha- 

 racter belonging to the male: the fourth joint of the tarsi is slightly lobed beneath: in 

 Say's description, by an error commonly called clerical, the last instead of the fourth joint 

 is said to be dilated. 



2. E. penetrans, valde elongatus, postice paulo angustatus, ater, subtilissimc fulvo-pubescens, 

 subtiliter confertissime scabro-punctatus, fronte linea tenuissima lrevi, thorace latitudine sesqui lon- 

 giore, lateribus parallelis antice rotundatis, pone medium canaliculato, utrinque obsolete bifoveato, 

 elytris tenuiter striatis, antennis pedibusque rufo-piceis. Long. *22 — -3. 



Lcc. Proc. Acad. Nat. Sc. 6, 47. 



Georgia, rare. In my former description, I only mentioned the two anterior fovea) of 

 the thorax, but on re-examination, I find that the posterior pair, just behind the middle, 

 are also visible: the sixth joint of the antenna), in this species, is not more than half the 

 size of the seventh, while, in the preceding, they are equally enlarged. 



3. E. front osus, nigro-piceus, modice elongatus, griseo-pubescens, capite punctato, linea fron- 

 tali vix distincta, thorace subtransverso, lateribus parallelis antice rotundatis, confertissime scabro- 

 punctato, postice canaliculato, utrinque vix obsolete foveato, elytris (parallelis '() scabro-punctatis, 

 tenuiter fere obsolete striatis. Long. - 2. 



Eucnemis frontosus Say, Trans. Am. Phil. Soc. 6, 187. 

 Epiphanis canaliculatus Lee. Proc. Acad. Nat. Sc. (!, 4G. 



One female specimen, Pennsylvania. On comparing this with the preceding species, I 

 do not find sufficient differences to warrant their being retained in separate genera: the 

 fourth joint of the tarsi, however, is smaller, and is not lobed: the form of body is a little 

 stouter, but is different from that of Epiphanis from the thorax not being regularly nar- 

 rowed in front: the plates of the posterior coxa), so far as I can examine them, appear to 

 be gradually dilated as in the two preceding species, not suddenly dilated and subtruncatc 

 as in Epiphanis cristatus: they are, however, pushed out of place by the pin, and cannot 

 be properly examined: the third joint of the antennae is a little longer than the fourth: 

 the eleventh is nearly as long as the two preceding. This is evidently Say's species, 

 although, by some strange oversight, I failed previously to identify it as such. 



