1916 | Camp: Subspecies of Sceloporus occidentalis fall 
(maximum .491) and femoral pores averaging 20+ on each thigh 
(minimum 18). Three specimens from the Inyo Mountains and the 
Kern River, five miles above Kernyille, are .450, .517, and .530, in 
body-tail ratio, and their femoral pores average 17; hence these speci- 
mens are intermediate. 
Crotaphytus wishizenu. from Humboldt County, Nevada, has 18 -+ 
femoral pores on the average, and a body-tail ratio of .504 (average 
of four specimens, agreeing closely with figures derived from Richard- 
son’s (1915, p. 407) measurements, of .496 for males and .510 for 
females of this species from Pyramid Lake, Nevada. The same species 
from southeastern California has a body-tail ratio of .463 (average 
of five specimens) and an average of 23.7 femoral pores. The mini- 
mum body-tail ratio in the Nevada specimens is .500, and the maximum 
in the southern California specimens measured is .492. The maximum 
number of femoral pores in the northern specimens is 19, the mini- 
mum in the southern examples 20. 
Novres ON CNEMIDOPHORUS TIGRIS 
Because of the practical impossibility of separating Cnemidophorus 
tigris and Cnemidophorus stejnegert at certain points on the desert 
divides and farther east in southern California, the writer believes that 
the forms in question had best be placed together as subspecies. Our 
series of Cnemidophorus (excepting beldingi) includes about 430 
specimens from California and northern Nevada. Two critical locali- 
ties, Walker Pass, Kern County, and San Gorgonio Pass, Riverside 
County, are represented by large numbers of specimens. <A study of 
these shows that there is both an intergradation of Cnemidophorus 
tigris mundus (a new name here proposed for (. tigris undulatus 
preoccupied by the C. wndulatus of Wiegmann, 1834, pt. 1, pp. 27-28) 
with tigris in the Walker Pass region, as indicated by Stejneger (1893, 
pp. 200-201), and of stejnegeri with tigris in Antelope Valley, Los 
Angeles County, around the north base of the San Jacinto Mountains 
(cf. Atsatt, 1913, pp. 89-40), and in eastern San Diego County. 
The Walker Pass intergrades show a puzzling similarity to 
stejnegert in the heavy spotting of the throat and, as a rule, in the 
lack of smaller central gular scales. Since none of the specimens from 
the Walker Pass region have as large gular scales as some stejnegeri, 
and in view of their geographic position linking two closely related 
subspecies, it seems better to consider them as above, and to suggest 
