March, 1921.] DaVIS: RECORDS OF XORTH A.MKRICAN CiCADAS. 1 1 



The shape of the head in nigriviridis is much like that of 

 synodica, also as in that species the valve is long. The dark mark- 

 ings on the head and thorax are also similar. On the other hand the 

 fore wings are not as broadly rounded at the extremities as in 

 synodica, the radial cell is more elongate, and the eighth apical area 

 is proportionately longer. For the present this very distinct species 

 can be placed next to arctostaphyhc. 



Okanagana synodica (Say). 



This species has been recorded from Montana. Nebraska. Kansas, 

 Colorado. New Mexico and Texas. (See Journal N. Y. Rnto. 

 See. June-Sept.. 1919. p. 211.) The following records extend its 

 range to two additional states: Parowan. Utah, two males. Palmer's 

 assorting. No. 1201. Uhler collection. U. S. Nat. Museum. Medicine 

 Bow. Wyoming, about 6,600 ft.. June 22-24. 1920. four males, col- 

 lection Am. Museum of Natural History. Dr. Frank E. Lutz col- 

 lected these four specimens and noted at the time " the small brown 

 Cicada on grass, has a continuous note, but sometimes continues 

 for only a short time." 



Okanagana balli Davis. 



In the original description. Journal X. \'. E.vto. Soc. June-Sept., 

 1919. this species is recorded from Iowa. Minnesota and South 

 Dakota. .Additional records are as follows: Lake Okoboji. Iowa. 

 July 6. 1917 ( L. L. Buchanan), collection U. S. Biological Survey. 

 Lake Okoboji. Iowa. July. 1919. male fed to a young .\rkansas 

 Kingbird by its parent and taken from the young bird by T. C. 

 Stephens. About seven or eight other specimens were fed to the 

 young birds. Blue Rapids, Kansas, June 20, 1919. three males and 

 a female (O. A. Stevens). "Nebraska." male, collection Mus. of 

 Comparative Zoology, Cambridge. Mass. Kalispell. T'l.-ithc;»(l Co.. 

 Montana. June, male (Prof. H. F. Wickham). 

 Okanagana vanduzeei Distant. PI. II. fi^. 3. 



Mr. E. R. Leach has kindly presented mc with six males of 

 O. 'auduzcci var. cotisobrina collected in Mendocino County. Cali- 

 fornia from June 20 to 2j, 1920. These northern specimens are a 

 little smaller than the average from the tyi)e locality. San Diego 

 County, but otherwise there appears to be n<> (lifTtrt-ncc. 



