450 PROCEEDINGS OF THE ACADEMY OF [Oct. . 



9 



mm. mm. mm. 



Mt. Tamalpais, . . 



Mt. Lowe (summit), .... 27.5 28 14 



(4,000 to 4,800 feet), .28 28.2 15.5 



Mt. Wilson (5,000 feet), ... 27 27.5 14.8 



Arroyo Seco Canyon (3,000 feet), 



Rubio Canyon (2,200 to 3,000 feet), 



Santa Catalina Island, ... 26 26 14.5 



The Mt. Lowe series also exhibits considerable individual variation 

 in size in the specimens taken on the summit, the extremes of the males 

 measuring as follows : Length of body, 17-22 mm. ; length of tegmen, 

 20-25 mm. ; length of caudal femur, 10.3-13 mm. In none of the other 

 lots of specimens does individual variation play such a decided part, 

 although the Arroyo Seco Canyon and Santa Catalina representatives 

 show it in a lesser degree. 



The basic color pattern has already been described by Brunei, but 

 the tegminal bars show almost endless variations in width, intensity 

 and solidarity, while the base color varies from pale ochraceous-buff 

 shades to dull blue-gray, frequently pale pinkish-red. The fuscous 

 band of the wing is also of variable intensity, being distinct and 

 continuous, although not sharply defined, or nearly lacking, indi- 

 cated only by a cloud at the stigma and another one just beyond 

 the middle of the wing. The Santa Catalina series has the tegminal 

 bars broader and more contrasted than in any of the other specimens. 



The principal features of the species which strike one at first glance 

 are the deep head, the usually pale and often black-dotted caudal 

 margin of the pronotal disk, the peculiar granular character of the 

 coloration and the coloration of the caudal femora. 



The only previous record of this species is the original of Bruner, 

 who described it from Los Angeles, California. Los Angeles County 

 was probably intended. 



Trimerotropis latifasoiata Scudder, 



A single female of this species was taken at Las Vegas, August 10. 

 While somewhat larger than Scudder's measurements, this individual 

 agrees very well with his description. 



This species has been recorded from Wallula, Washington, Salt Lake 

 Valley and Lake Point, Utah, and from Nebraska, although specimens 

 from the last mentioned State may be T. laticincta Saussure, if the 

 two forms are considered separable. 



