84 A. N. CAUDELL. 



One male ; Stillwater, Okla., 1894. I have seen some twelve or 

 fifteen specimens of Diapheromera from Oklahoma and all of them 

 proved to be the above species. 



(7.) — Tettix ornatus Say. 



Acridium ornatus Say, Amer. Ent., pi. 5 (1824). 



Collected in Payne Co., Okla., in 1893. It probably occurred in 

 some numbers, but I have but one specimen preserved, a female. 

 Prof. A. P. Morse is the authority for this determination. 



(8.)— Tettig-idea lateralis Say. 



Acridium lateralis Say, Amer. Ent., pi. 5 (1824). 

 Tettix polymorphaBurm. , Handb. Ent., ii, 659 (1838). 



Stillwater, Okla., 1892-1897. Both forms occur in considerable 

 abundance. 



(9.) — Mermiria alacris Scudd. 



Mermiria alacris Scudd., Proc Bost. Soc. Nat. Hist., xix, 30 (1877). 



Stillwater, Okla., 1893. Prof. Brunner is the authority for this 

 determination. 



(10.)— Mermiria bivittata Serv. 



Opsomala bivittata Serv., Orth., 589 (1839). 



Three males, three females; Perkins, Okla., Aug. 13-16, 1901. 



ill.)— Mermiria neomexicana Thoiu. 



Opomala neomexicana Thoiu., Proc. Acad. Nat. Sc. Philad., 1870, 77 (1870). 



Two females, Cherokee Nation, Indian Territory, in 1896 ; two 

 males at Perkins, Okla., Aug. 13, 1901. 



(12.) — Mermiria rostrata McNeill. 



Mermiria rostrata McNeill, Proc. Davenp. Acad. Nat. Sc, vi, 205, 207-208, 

 pi. i, fig. 3 (1897). 



One male, one female ; near Perkins, Okla., Aug. 13, 1901. 



(13).— Syrbula admirabilis Uhl. 



Stenohothras admirabilis Uhl., Proc. Ent. Soc. Philad., ii, 553 (1864). 



Three males, three females ; Perkins, Okla., August, 1901. Also 

 at Stillwater, Okla., in 1893. 



(14.)— Orphulella picturata Scudd. 



Orphidella picturata Scudd., Can. Ent., xxxi, 178, 182 (1899). 



One female specimen collected on August 12th at Perkins, Okla. 

 It agrees with Scudder's description. 



