March, 1915-] Van Duzee : West Coast CiCADIDvE. 43 



study by Mr. C. H. Kennedy from the Stanford University col- 

 lection. I also possess two very small males taken in Fresno Co., 

 by Dr. J. C. Bradley in June, 1907, which seem to differ only in having 

 the last ventral segment broader and sinuated at apex. I could find 

 no difference in the form of the uncus or in other structural details. 



Genus 7. TIBICINOIDES Dist. 

 Distant, Ann. Mag. Nat. Hist., Ser. 8, XIV, p. 166, 1914. 



Peculiar in having the basal one half of the elytra infuscated 

 and subcoriaceous and the transverse fold crossing the elytra at the 

 node strongly developed, resembling a transverse nervure. 



Type Tibiccn cupreo-sparsa Uhler. 



34. Tibicinoides cupreo-sparsus Uhler. 



Uhler, Trans. Md. Acad. Sci., I, p. 43, 1889 {Tibicen). 



This pretty little species is very distinct by its elliptical form, 

 blackish-brown color and the scarlet base of the wings. It has been 

 found in San Diego Co., and as far north as Los Angeles. It occurs 

 close to the ground on a low fine grass and makes a feeble chirping 

 sound that can be heard but a short distance and is easy to locate. 



35. Tibicinoides hesperius Uhler. 



Uhler, Bui. U. S. Geol. Geog. Surv., I, p. 342, 1876 (Cicada). 



This larger species was described from Colorado but Dr. Uhler 

 reports it from Nevada and from the vicinity of San Francisco and 

 San Diego. I have not seen specimens from California. 



Note. — After this paper had gone to the printer Mr. Davis kindly 

 sent to me for examination examples of the following two species 

 previously unknown to me. As indicated by the numbers Okanagana 

 hirsuta should follow mariposa and occidcntalis should follow 

 cancsccns. 



20a. Okanagana hirsuta Davis, ante. 



A large species with the elytra broader than in rimosa that may at 

 once be distinguished from all the allied forms by its having the 

 lower surface and legs rather thickly clothed with long grey hairs. 

 The basal areole of the elytra is entirely hyaline with its apical angle 



