OF in:'. DN1 1 BO III 



of the presternum does not reach the anterior angles of the thorax, but is continued di- 

 ly to the apexal margin of the inflexed portion. 



The mandibles, although short, trigonal, and without any tooth, are more prominent 

 than in the genuine Eucnemides: the anterior margin of the sinus for the ant. i v( ry 



distinct, and even elevated, hut the posterior margin is oblit< rated in one of the genera 

 (Tharops.) The margin of the prosternum does not seem to abul i the mandil 



is to enclose and protect the mouth as in the two other dr of the Eucnemi 



the gula is corneous, and extends as far back as th of the head, which, though de- 



flexed, is really inserted by a narrow neck: the anterior margin of the prosternum i- fur- 

 nished with a large indexed membranous portion, abutting against the gula, an 

 by two corneous pillars. I have very great doubts whether this division should be in- 

 cluded in the present family, but as 1 have not yet discovered any other place for it. it 

 must remain for the present. 



Melasis Oliv. 



1. M. pectinicornis, nigro-piceus, cylindricus, tenuitcr fulvo-pubescei ifertim punc- 



•analiculato, thoracc latitudine breviore muricato, lateribua omnin 

 angulis anticis porrcctis, posticis acutia parvia prominulis, elytris confortim scabria distil 

 pedibua antennisque rufescentibus, his articulia 2 — G sensim paulo Iatioribus, 7 — 11 valde tra 

 intus productia. Long. -2'i — ■■)■!. 



Melsheimer, Proceed. Acad. Nat. So. 2, 1 18. 



Pennsylvania, Dr. Melslieimcr; Ohio, Dr. Schanm. This genus is easily distinguished 

 from the next by the broad and compressed legs: in our species the second joint of the 

 and nn;e is nearly as large as the third. The abdomen has an obtuse elevated corapn 

 tubercle at the apex. The clypeus is slightly emarginate at tip, and the small labium is 

 thus rendered visible. 



Closely allied to this, but evidently a different species, and possibly even a m w gi nus, 

 is the following, which has not been found since its description by Say. 



Eucnemis qnadricollia, '• /-' ly piccoua black with yellowish ha 

 pun> idinally •• '>n the v. I tan t at bo I in ap- 



proxim.v r frontal elevations: second joint more robust than tl 



•: fourth joint rather longer than the third: remaining joii 

 little longer: int oval: th punctures lik( I 



I, but not much confluent: anti [htly 



contracted towards the posterior 



backward be; line of the base: elytra with p id minuti 



tial lin< with less crowded punctures than the thorax, middle Begmenl 



gro" Like all beneath da i a little paler. 1. 



Indiana. (Sa; 6.) 



Tharoi / 

 1. T. ruficorni sccna, c 



lateribua fere rcctis, angulis posticia acuti.-, linea dot ^iuni acu; 



