416 REVISION OF THE ELATEKID.K 



of the antennas, and the absence of the very short lobe of the fourth joint of the tarsi, are 

 insufficient characters. Our species may, therefore, be arranged in three groups. 



A. Tarsi articulo 4 t0 brcvitcr lobato ; ungues ad medium fortiter dentati. 



1. F. orcliesides, fusco-piceus, opacus, lielvo-pubescens, capite thoraceque dense scabro-puuctu- 

 latis, hoc antrorsum angustato, latitudine vix breviore, lateribus rotundatis, angulis posticis productis, 

 basi ad medium tripunctata, elytris a basi vix angustatis, subtiliter scabro-punctulatis, tenuiter stri- 

 atis, pedibus antennisque ferrugineis, his versus apicem attenuatis, articulo 3'° sequente vix longiore. 

 Long. '68. 



Onychodon orcliesides Newman, Entomological Magazine, 5, 384. 



One specimen found at Racine, Wisconsin, given me by Dr. Hoy. This is by far the 

 largest species of Eucnemide yet found in the United States. It seems to be very rare; 

 the unique specimen described by Newman was found at Trenton Falls, in the state of 

 New York. 



2. F. bicolor, supra fuscus, opacus helvo-pubescens, capite thoraceque dense scabro-punctulatis, 

 hoc antrorsum angustato, latitudine vix breviore, lateribus antice rotundatis postice subparallelis, an- 

 gulis posticis productis, elytris a basi angustatis confertim scabro-punctulatis, tenuiter striatis, subtus 

 ferrugineus, antennis articulo 3'° sequente longiore. Long. '37. 



Lee. Proc. Acad. Nat. Sc. G, 47. 



Hylocharus ? bicolor Melsheimer, Proc. Acad. Nat. Sc. 2, 140. 



One specimen found at New York, given me by Mr. Willcox. Resembles in general 

 characters the preceding, but is very much smaller: the middle lobe of the base of the 

 thorax is shorter, and appears to be only bipunctate: the elytra are regularly narrowed 

 from the base, and the third joint of the antenna? is one-third longer than the fourth: a 

 portion of the antenna? is wanting, so that I do not know if they are more slender exter- 

 nally, as in F. orcliesides. 



B. Tarsi articulo 4 t0 brevilcr lobato; ungues non dentati. 



3. F. badius, fuscus, elongatus, helvo-pubescens, capite thoraceque dense subtilius punctatis, hoc 

 latitudine longiore, antrorsum subangustato, lateribus vix late rotundatis, angulis posticis productis 

 paulo inflexis, elytris a basi vix angustatis, scabro-punctulatis, tenuiter striatis, pedibus antennisque 

 obscure ferrugineis, bis articulo 3 10 sequente duplo-longiore, versus apicem non attenuatis. Long. - 31. 



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



Dirhagus badius Melsheimer, Proc. Acad. Nat. Sc. 2, 140. 



Dirhagus rufipes? Melsheimer, Proc. Acad. Nat. Sc. 2, 150. 



Two specimens found in Pennsylvania: the second joint of the antenna? is longer than 

 the two preceding species, being one-half as long as the third: the fourth joint is shorter 

 than the fifth, which is equal to the following: the third joint is about twice as long as 

 the second, or the fourth. The antenna? are nearly filiform, not being attenuated towards 

 the tip, as in F. orcliesides: the ungues of the tarsi are dilated at base, but not toothed: 

 the margin of the thorax is slightly curved inwards at the posterior angles, while in the 

 preceding species it is straighl at that part. One specimen has the front indented with a 

 slight longitudinal fovea, and is probably Dirhagus rufipes Mcls. 



