424 



PROCEEDINGS OF THE ACADEMY OF 



[Oct., 



Length of body, 

 Length of pronotum, 

 Length of tegmen, 

 Length of caudal tegmen 



The series before us is from the following localities : Cotton- 

 wood, September 9, 12 d\ 10 9, 1 immature specimen; North 

 Range, Providence Mountains, August 12, 1 c? , 2 9 , 2 immature 

 specimens; Cima, August 12, 1 9 ; Kelso, August 12, 1 9,1 immature 

 specimen; foothills Bird Spring Mountains, California and Nevada, 

 August 11, 3 d\ 



On re-examining all the available material of the genus we find 

 that specimens from Yuma, Sentinel and Sahuaro Plain near Tucson 

 Mountains, Arizona, recorded by us 6 as B. argentatus, are really B. 

 punctatus; but it also appears probable that the two species may 

 intergrade in the vicinity of the divide and the more elevated central 

 tract, as the specimen from Sahuaro Plain and other material from 

 Florence, Arizona, show a tendency toward B. argentatus in the form 

 of the fastigium, although distinctly punctatus in the sum total of 

 characters. The Yuma specimens are typical punctatus, the tegmina 

 being even more immaculate than is the case with the Californian 

 specimens. 



It is quite probable that the specimens of this genus previously 

 recorded from Bill Williams Fork, Indio and Palm Springs as B. 

 argentatus belong to B. punctatus. This species produced practically 

 the same stridulation as B. argentatus and in habits was also similar. 

 Amphitornus ornatus McNeill. 



This species is represented by a series of two males and one female 

 from Pasadena, taken August 1 ; five males and three females from 

 Mt. Lowe, taken at elevations of from 4,000 to 4,800 feet, August 8; 

 and one pair from El Toro, Orange County, taken August 20. 



When compared with specimens from Aden, New Mexico, the Cali- 

 fornian individuals are inseparable. The pair from El Toro are more 

 reddish than the others, the pattern also being duller and less con- 



« Proc. Acad. Nat. Sci. Phila., 1908, p. 376. 



