UNIVERSITY OF CALIFORNIA 



Igrinnell-StOreri plate 5i 



a li c cl 



a. Western Skiuk, adult; I'leasaut Valley, May 28, 1915. 



b. San Diogo Alligator Lizard, tail regenerated; Yosemite Valley near the village, 

 May 19, 1919. 



c. 8ierra Alligator Lizard, iiiiinature with tail coniidete; Yoseiuite X'alley, May 19, 

 1919. 



d. Sierra Alligator Lizaid, a<lidt with legeiierated tail; ( 'hiiuiuaiun, June 14, 191o. 



All photographiMJ, aliout % natural >size, from freshly c-oUected specimens. See 

 text, pp. ti30, (J.'!;!. 



[7:i7| 



