Scarabaeidae of Nebraska 97 



Specimens examined: 2, from Lincoln and Fairmont, col- 

 lected in July. 



Trox atrox Le Conte. 



1854. Trox atrox Le Conte, Proc. Acad. Nat. Sci. Phila., p. 214. 



Specimens examined : 24, from Lincoln, Fremont, and 

 Monroe Canyon, collected from April to July. 



Trox latlcollis Le Conte. 



1854. Trox laticoUis Le Conte, Proc. Acad. Nat. Sci. Phila., p. 213. 



Specimens examined : 1, taken at Lincoln in June. 



MELOLONTHINAE 



Abdominal spiracles in part situated on the upper por- 

 tions of the sternites, the last one usually visible behind the 

 elytra; the rows of spiracles feebly diverging; ligulae usually 

 firmly united with the mentum ; the species feeding upon liv- 

 ing vegetable matter. 



Sericini 



Posterior coxae flat and broadly dilated ; elytra more or 

 less distinctly sulcate; labrum indistinct. 



Serica Mac Leay 



1819. Mac Leay: Horae entomologicae, i, p. 146. 



1856. Le Conte: "Synopsis of the Melolonthidae of the United 

 States," Journ. Acad. Nat. Sci. Phila., (2) iii, pp. 225-288. 

 (Descriptive notes and table for 15 species). 



1897-1902. Brenske: "Die Serica Arten der Erde," Berliner En- 

 tomol. Zeitschr, xlii, (Table of related genera), xlvii, (List 

 of names in the genus for the world). 



1910. Blatchley: Coleoptera of Indiana, pp. 956-958. (Descrip- 

 tive notes and table for 7 species). 



203 



