12. SCELOPORUS 289 



begins at the very lowest margin and also reaches the upper 

 limit of this zone, as for instance in the neighborhood of 

 Hidden Lake, east of Round Valley. Along Fuller's Mill 

 ridge this species replaces Sceloporus biseriatus as the altitude 

 increases, until Sceloporus graciosus [vandenburgianus^ 

 reaches its maximum of population between 5,800 and 6,000 

 feet. In the Transition zone over the higher parts of the 

 Santa Rosa region from the peak to Toro this was the only 

 reptile observed. Here it was abundant everywhere, about 

 logs as well as rock piles." 



In California, this subspecies has been collected in Los 

 Angeles' (San Gabriel Mountains, vicinity of Mount Wilson 

 at 4,150 to 5,800 feet. Mount Lowe at 4,000 feet. Horse 

 Flats, vicinity of Pine Flats at 5,500 to 5,800 feet), San 

 Bernardino (San Bernardino Mountaines, from Fish Creek 

 ?t 6,500 to 6,700 feet, South Fork of Santa Ana River at 

 6,200 feet, Santa Ana River at 5,500 to 8,500 feet, Clark 

 Hill at 6,000 feet. Bluff Lake), Riverside (San Jacinto 

 Mountains, from Schain's Ranch at 5,300 feet. Fuller's Mill 

 at 5,850 to 7,000 feet, Strawberry Valley at 6,000 feet, 

 Hemet Valley Tahquitz Peak at 8,000 feet. Keen Camp, 

 canyon east of Round Valley at 8,500 feet, Thomas Moun- 

 tain at 6,800 feet, Santa Rosa Mountains at Santa Rosa Peak 

 7,500 feet), and San Diego ("Summit of the Coast Range" 

 probably the Laguna Mountains, Laguna Mountains, Palo- 

 mar Mountains, Cuyamaca Mountains at 6,000 feet), coun- 

 ties. 



In Lower California, it has been secured in the San 

 Pedro Martir Mountains, at Agua de las Fresas, 6,000 feet, 

 Vallecitos, 9,000 feet, and La Grulla, 8,000 feet. 



Habits. — In the San Bernardino Mountains, Dr. Grin- 

 nell found these lizards on stumps, logs, and rock-piles, "in 

 the hot part of the day, actively jumping and darting about 



