Scarabaeidae of Nebraska 103 



No specimens of this species are at hand from Nebraska, 

 but Mr. Fall records in his monograph a single specimen in 

 the Bowditch collection labelled "Nebraska". Since tene- 

 brosa is a fairly common species in the northwestern states 

 one might reasonably expect to collect it in the Pine Ridge 

 region of western Nebraska. 



Diplotaxis haydeni Le Conte. 



1856. Diplotaxis haydeni Le Conte, Journ. Acad. Nat. Sci. Phila., 



(2), iii, p. 272. 

 1856. Diplotaxis innoxia Le Conte, Ibid., p. 273. 



Specimens examined: 88, from Cedar Bluffs, Dewey 

 Lake in Cherry Co., North Platte, Haigler, Harrisburg, and 

 the Pine Ridge region in Sioux Co., collected from April to 

 August 1. 



Diplotaxis obscura Le Conte. 



1859. Diplotaxis ohscuva Le Conte, Coleopetra of Kansas and New 

 Mexico, p. 9. 



Specimens examined: 1, from Sioux County. Ex- 

 amples are also at hand from Custer, South Dakota and 

 Newcastle, Wyoming. The species was described from the 

 Black Hills, and is rather widely distributed in the Rocky 

 Mountain Region. 



Diplotaxis tristis Kirby. 



1837. Diplotaxis tristis Kirby, Fauna Boreali-Americana, iv, p. 130. 



Specimens examined: 3, from Lincoln, collected in 

 latter May. Tristis is an eastern species scarcely to be ex- 

 pected this far west, but it has also been recorded from 

 Kansas. The three specimens at hand are all small, (10 - 

 12 mm.) for the species which in the larger examples at- 

 tains a length of 14 mm. 



Diplotaxis subangulata californica Schaeffer. 



1907. Diplotaxis californica Schaeffer, Journ. N. Y. Ent. Soc. xv, 

 p. 66. 



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