Scarabaeidae of Nebraska 67 



5. Nearly smooth above leco7itei 



Densely, but not coarsely, granulated above praticola 



6. Coarsely and sparsely granulated; striae of elytra equal 

 Idejjressijyeyinisl 



Finely and densely granulated; lateral striae of elytra deeper 

 than the discal striae ebenus 



7. Eyes large; antennae ferruginous , [vigilans} 



Eyes normal; antennae black 8 



8. Granules of pronotum and pygidium distinct luevis 



Pronotum and pygidium finely scabrous, without distinct gran- 

 ules chalcites 



Canthon nigricornis Say. 



1823. Ateuchus nigricornis Say, Journ. Acad. Nat. Sci. Phila., iii, 

 pp. 207 - 208. Le Conte Ed., ii, p. 133. 



Specimens examined: 11^, 5$, from Pine Ridge*, 

 Brady Island, Dismal River, Halsey, and Watts Lake in 

 Cherry Co., collected during May, June and July. Although 

 the specimens at hand are all from central and western Ne- 

 braska, the known distribution of the species indicates that 

 nigricoryiis should be found over the entire state, at least 

 under favorable local conditions. 



Canthon ebenus Say . 



1823. Ateuchus ebeneus Say, Journ. Acad. Nat. Sci. Phila., iii, p. 

 209. Le Conte Ed., ii, p. 134. 



Specimens examined : 20 <? , 22 9 , from Neligh, Culbert- 

 son, Haigler, Imperial, Brady Island, Halsey, Valentine, and 

 the lake region of Cherry Co., collected during May, June and 

 July. This common species is widely distributed, occuring 

 from Maine to Texas, 



* "Pine Ridge" as used in this paper refers not to the town, but to the the pine 

 clad hills of Sioux and Dawes counties. 



173 



