Scarabaeidae of Nebraska 87 



[Ochodaeus biarmatus Le Conte. 



1868. Ochodaeus biarmatdis Le Conte, Trans. Amer. Ent. Soc, ii, 

 p. 51. 



This species has not been taken in Nebraska. However, 

 it is common from Kansas southward and may be found in 

 the southwestern part of the state.] 



Ochodaeus mandibularis Linell. 



1896. Ochodaeus mandibularis Linell, Proc. U. S. Nat. Mus., xviii, 

 p. 723. 



Specimens examined: 1, from Mitchell, taken at light, 

 July 24, 1916 by C. E. Mickel. 



Geotrupini 



Body rounded and very convex, elytra usually strongly 

 striate; pronotum of the male frequently modified, armed 

 with horns or tubercles ; head of male sometimes armed ; man- 

 dibles and labrum prominent; antennae 11- jointed; pygidium 

 always entirely covered by the elytra. 



Odontaeus Klug 



1843. Klug: Abhandl, d. K. Akad. d. Wiss. z. Berlin, p. 37. 



1870. Horn: "Notes on some Genera of Coprophagus Scaraba- 

 sidae of the United States", Trans. Amer. Ent. Soc, iii, pp. 

 42-51. (Descriptive notes on 3 species). 



1910. Blatchley: Coleoptera of Indiana, p. 938. (Descriptive 

 notes on 2 species). 



Thus far none of the three species known in this genus 

 have been collected in Nebraska, but judging from the re- 

 corded distribution of cornigerus Melsheimer and filicornis 

 Say both are likely to occur in the state. In the former 

 species the clypeal horn of the male is stout and fixed, while 

 in the latter it is slenderer and movable. 



193 



