Scarabaeidae of Nebraska 75 



Of the nineteen species here recorded from Nebraska nine 

 are represented in the collection by six or less specimens each. 

 When a collection in such a group as this shows a consider- 

 able proportion of uniques the student is justified in assuming 

 that it is not fully representative, and should therefore expect 

 to find several additional forms. 



1798. Illiger. Kugelann Verzeichniss der Kafer Preussens, P. 15. 



1870. Horn: "Description of the Species of Aphodius and Dialytes 

 of the United States", Trans. Amer. Ent. Soc, iii. pp. 110- 

 134. (Descriptive notes and table for 51 species). 



1887. Horn: "A Monograph of the Aphodiini Inhabiting the 

 United States", Trans. Amer. Ent. Soc, pp. xiv, 1-110. (De- 

 scriptive notes and table for 81 species). 



1910. Schmidt: "Coleoptera Laniellicornia Family Aphodiidae", 

 Gen. Ins., fasc. 110, 155 pp. 3 pi. (Subgeneric tabulation and 

 list of 108 North American species). 



1910. Blatchley: Coleoptera of Indiana, pp. 927-935. (Descinptive 

 notes and table for 20 species). 



SYNOPSIS OF THE SPECIES 



1. Apex of hind tibiae fringed with short equal spinules 2 



Apex of hind tibiae fringed with longer, unequal spinules 6 



2. Mesosternum not carinated between the coxae 3 



Mesosternum distinctly carinated between the coxae 5 



3. Head and pronotum black, elytra red, pronotum of male im- 

 pressed in front fimetarius 



Head and pronotum colored like the elytra, brown or black 4 



4. Clypeus with a distinct, transverse ridge duplex 



Clypeus without a transverse ridge ruricola 



5. First segment of hind tarsi not longer than the next two to- 

 gether; color black; sutural interval of elytra as wide as or 

 even wider than the second interval granarius 



First segment of hind tarsi equal to the next three together; 

 elytra reddish brown, suture and side margins darker or 

 blackish vittatus 



6. Pronotum narrower at base than at apex; humeri of elytra 

 dentiform ■. ; .;... ;, ohlongus 



181 



