46 Journal New York Entomological Society, t^'o'- x>^ix. 



''Colorado ( E. V. Beales)," male without exact locality or date 

 label. Through the courtesy of Prof. Myron H. Swenk, I have also 

 been able to examine a female of this species in the collection of the 

 University of Nebraska, labeled " Colorado." It is to be regretted 

 that the information is not more complete. 



There is a male in the writer's collection from West Point, Ne- 

 braska, and Mr. R. A. Leussler has sent me nine Unnci from Omaha, 

 ■collected in October, 1917, and August, 1919. From Wakefield. Clay 

 Co., Kansas, I have two males and a female collected by Mr. J. C. 

 Warren. From the Kansas and Nebraska data it would appear that 

 the Colorado records are no doubt correct. 



2. Tibicen canicularis (Harris). 



Figured in Journal, N. Y. Entomological Society, March, 1916, 

 PL 3, fig. 2, and Sept.-Dec, 1918, PI. 7, fig. 2. 



This species is recorded from Colorado in Mr. Van Duzee's Cata- 

 logue of the Hemiptera of America North of Mexico, 1917. 



In his List of Hemiptera of the Region West of the Mississippi 

 River, including those collected during the Hayden explorations of 

 1873, Bulletin of U. S. Geological and Geographical Survey of the 

 Territories, vol. i, p. 342, 1876, Uhler says: "From the mountains of 

 Colorado. The specimen corresponds in size, structure, and mark- 

 -ings wi'th those from eastern Massachusetts and other parts of New 

 England. New Jersey seems to be the region where it varies most in 

 size and kind of markings." 



In the writer's collection there are six specimens from Aweme, 

 Manitoba (Criddle), and a male from Sioux County, western Ne- 

 braska, collected August 17, 1908 (C. H. Gable). In the collection of 

 the University of Nebraska there are five additional specimens from 

 the same county. 



This species must not be confused with Tibicen aurifcra (Say), 

 which it resembles. 



3. Tibicen marginalis (Walker). 



Figured in Journal, N. Y. Ento. Society, March, 191 5, PI. 2, fig. 

 I, and December, 1915. PI. 18, fig. 2. 



"Colorado," male (E. V. Beales), University of Nebraska. This 

 is the only specimen so far examined from Colorado, but we have 



