March, I9I5.] DaVIS : NeW SpECIES OF CiCADAS. 11 



NEW SPECIES OF CICADAS FROM CALIFORNIA 

 AND UTAH. 



By Wm. T. Davis, 



New Brighton, Staten Island, N. Y. 



In preparing his Preliminary Review of the West Coast Cicadidse, 

 printed elsewhere in this Journal, Mr. Edward P. Van Duzee ex- 

 amined a number of specimens from my collection and has very 

 kindly suggested that I describe some of the new species. He has 

 also been good enough to place in my hands some of the specimens 

 described in the above mentioned paper, so that I might have them 

 for comparison. 



It is evident that there are a considerable number of species of 

 cicadas in the states bordering the Pacific ocean many of which may 

 best be treated of by comparison with Okanagana rimosa and Okana- 

 gana synodica described many years ago by Thomas Say from the 

 middle west. Say's description of synodica is particularly good and 

 the species has been easily identified from the Rocky Mountain region 

 of Colorado, where it is quite abundant. Following this plan the 

 descriptions here given often make reference and comparison to 

 these two standard species. 



Okanagana rubrovenosa new species. 



Type male, Mariposa Co., California, June 15, 1914. 



A little smaller than 0. rimosa, slimmer and with proportionately 

 narrower fore wings; color black and dark sanguineous. A strik- 

 ingly handsome species. 



Length 22 mm.; to tip of the wings 31 mm,; fore wing 8.5 by 

 26 mm. Head as wide as the anterior portion of the pronotum, front 

 about as prominent as in rimosa; surface of the head between the 

 eyes not deeply furrowed. Front convex, the median sulcus some- 

 what narrowed above, transverse rugre about as prominent as in 

 rimosa. Pronotum 3.5 by 8 mm., the sides parallel, or nearly so 

 anteriorly ; humeral angles shaped as in rimosa, with the wrinkles 

 less prominent. Opercula oblique, sides sinuated. Last ventral seg- 



