32 



CALIFORNIA ACADEMY OF SCIENCES 



TPitoc. 4th Ser. 



twenty-nine times, 15 twenty-seven times, 16 thirty times, 17 

 twelve times, and 18 three times ; average 15.01. These counts 

 are intermediate between tfcpse of Arizona (average 15.8, 16.5, 

 17.6) and Pyramid Lake specimens (average 13.76). 



16. Callisaurus ventralis myurus Richardson 



One hundred and ninety-two (Nos. 40596 to 40786 and 

 No. 40877) were secured in the vicinity of Pyramid Lake, 

 Washoe County, July 1 to 13, 1916. Twelve of these (Nos. 

 40689 to 40700) were shot at the Indian Agency whence came 

 the type of Richardson's Callisaurus ventralis myurus. The 

 others were obtained near Sutclifre, Pyramid Lake. 



Femoral pores in fifty of these specimens vary from 11 to 17 ; 

 being 11 three times, 12 eleven times, 13 twenty-eight times, 

 14 thirty times, 15 twenty-two times, 16 five times, and 17 

 once; average 13.76. 



The number of femoral pores on 206 thighs of specimens 

 from Pyramid Lake is shown by the dotted line in the follow- 

 ing chart (Figure 1), while 248 counts from Arizona speci- 

 mens of C. ventralis ventralis are represented by the continuous 



Fig. 1— FEMORAL PORES IN CALLISAURUS 

 248 counts Arizona. 206 counts Pyramid Lake. 



