128 R. W. Daivson 



ately above and behind the explanate portion of the margin 

 with a distinct, elongate and posteriorly evanescent dark spot 

 immaciilata 



Cyclocephala hirta Le Conte. 



1861. Cyclocephala hirta Le Conte, Proc. Acad. Nat. Sci. Phila., p. 

 346. 



Specimens examined : 7 9, from Lincoln and Maskell, 

 collected from June to August. 



Cyclocephala villosa Burmeister. 



1856. Cyclocephala villosa Burmeister, Handbuch der Entomologie, 

 V, p. 54. 



Specimens examined : 5 <j , 4 $ , from Lincoln, col- 

 lected during June and early July. 



Cyclocephala longula Le Conte. 



1863. Cyclocephala longula Le Conte, Smithsonian Miscellaneous 

 Collections, New Species, pt. i, p. 79. 



Specimens examined : 1 3 , from Haigler, collected 

 July 5, 1911 by J. T. Zimmer. 



Cyclocephala immaculata Olivier. 



1789. Melolontha immaculata Olivier, Encyclopedic Methodique, 

 Insectes, v, p. 29, pi. 8, fig. 95. 



Specimens examined: 120 <? , 57 9, from Omaha, 

 South Bend, Lincoln, Wymore, Fairmont and York, col- 

 lected from May 3 to July 28. 



Dyscinetus Harold . 



1869. Harold: L'Abeille, vi, p. 123. 



1915. Casey: Memoirs on the Coleoptera, vi, pp. 165-173. (De- 

 scriptive table for 6 forms). 



SYNOPSIS OF THE SPECIES 



1. Pygidium with coarse, distinctly separated punctures; clypeus 



234 



