128 ENTOMOLOGICAL NEWS [May, '20 



of large trees, which stood somewhat apart from the denser 

 woodland. 



Measurements in Millimeters 



Length of Length of Width of Length of 



d^ body pronotum pronotum caudal tibia 



Mount Tamalpais, Cal... . 12.5 1.9 2.7 3.4 



Fairfax, Cal 14.5 1.9 2.7 3.8 



Carmel, Cal 12.7 1.9 2.7 3.7 



9 



Guerneville, Cal 20.8 3.1 4. 6. 



Fairfax, Cal 17.7 2.4 3.4 4.2 



Oakland, Cal .. 19.8 2.6 3.4 4.7 



The male genitalia and female penultimate tergite and 

 cerci are distinctive for the species. The former are shown 

 by text figure i, while under T. chumash, here described, 

 other features characteristic of this species are discussed. 



In males some variation in the form of the genitalia is 

 found, though the type is constant, showing no divergence 

 toward that developed in chumash. Thus the disto-internal 

 production of the cerci varies individually from the type 

 figured to one in which these portions are broader, this por- 

 tion of the sinistral cercus in a male from Monterey County 

 being distinctly broader than long with margin convex to 

 the rather broadly rounded apex. Furthermore the sinis- 

 tral cercus is produced proximad near the base, so that the 

 internal margin beyond the basal tooth is developed into a 

 distinct fiange, while the meso-dextral elongate plate is much 

 constricted mesad. These differences we believe are of no 

 further importance than indicating the degree of variation 

 to be expected in the male genitalia of the species. 



In females the cerci are elongate, leaf-like, cochleate plates, 

 obliquely truncate at their apices, with internal surfaces 

 roughly denticulate toward the dorsal margin. The distal 

 margin is smooth. 



We are consequently not fully satisfied that the female 

 from Kings River, in Fresno County, represents this species. 

 Though agreeing with the others here recorded in the form 

 of the penultimate tergite, the cerci show a broader and less 



