586 9. SCINCID.^ 



lower surfaces, behind the red of the throat, are dull yellow- 

 ish white. 



The head and back of the smallest specimens are dark 

 seal brown, darkest on the margins of the scales, with four 

 longitudinal light lines. The lower line on each side is in- 

 distinct, hardly to be distinguished from the coloration of 

 the ventral surfaces, except between the ear and fore limb. 

 The upper pair of light lines are broader than in P. skilton'i- 

 anus, and are separated by only two rows of scales. They 

 are white only on the head, being overlaid with bronze 

 posteriorly. The limbs are olive, darkest on the margins 

 of the scales. The tail is bluish gray with some bronze and 

 greenish tints near its base. The lower surfaces are creamy 

 white, grayish on the belly. 



A somewhat larger specimen (second in table of measure- 

 ments) is sepia above, with traces of the upper pair of light 

 lines on the neck but disappearing about 1 5 milimeters be- 

 hind the head. The red of the head is just beginning to 

 appear around the ear-opening. The lower surfaces are 

 grayish white. 



Length to anus 52 64 81 81 84 96 



Length of tail 66 119 142 136 15 8* 



Snout to ear 10 12 15 15 15 19 



Snout to occipital plates 9 11 13 13 14 16 



Fore limb 12 17 20 21 20 2 5 



Hind limb 18 24 29 30 30 34 



Base of fifth to end of 



fourth toe 7 10 11 11 11 13 



Distribution. — Red-headed skinks were first described 

 from the western slope of the Sierra Nevada of California. 

 In the vicinity of the Yosemite Valley, they have been taken 

 on the floor of the Yosemite Valley, at Inspiration Point, 

 Yosemite Valley, at an altitude of about 4,500 feet on the 



•Reproduced. 



