1916 ] Camp: Amphibians and Reptiles 525 



four; being 15 right: 15 left once, 14:15 twice, 14:14 three times, 

 14 :13, — :14, and 13 :13. All have scattered bright blue scales over the 

 back, and some are green along the sides. In one female the indigo 

 patches in the axilla are almost entirely lacking. Both striped and 

 spotted types of coloration are exhibited in the present series. The 

 total length of the largest example, a female, is 139 millimeters, and 

 the tail length is 89 millimeters. 



The tiny desert brown-shouldered lizard occurs throughout all the 

 environments of the Turtle Mountains district except in the tracts of 

 eolian sand near Blythe Junction. It seems to be most common in the 

 more rocky localities, particularly on the lava fields. Those taken on 

 brown scoriae were noticeably bluer than those found elsewhere. The 

 stomach of one individual contained several small ants and beetles, 

 and one spider. 



Uta graciosa (Hallowed) 

 Long-tailed Swift 



Seven specimens of this arboreal lizard were collected (nos. 1102, 

 5533-5538), one at Goffs and six near Blythe Junction. These in- 

 clude five males and two females. All the males have large postanal 

 plates and blue patches on the belly. The females do not possess 

 either of these characters. The scutellation of the back in the present 

 series is typical. The femoral pores number 10 in three thighs, and 

 11 in nine ; being $, J 1 , J 1 , 11 right : 11 left three times, J 1 , 5 11 : — twice, 

 J 1 11 :10, J 1 10:10. The pores are large in the males only. The colors 

 are rapidly changeable in life, as described below. A male in alcohol 

 lias the patches on the belly Olympic blue in color, thickly flecked with 

 white, and divided by a light line. Each white dot involves one scale. 

 The sides are yellowish, and the back grayish with reticulations of dark 

 gull gray. The alcoholic females are yellowish beneath. The largest 

 specimen, a male, measures 181 millimeters in total length and 127 

 millimeters in tail length. A female measures in total length 168 milli- 

 meters and in tail length 114 millimeters. 



A number of long-tailed swifts were seen in the vicinity of Blythe 

 Junction. Some were in creosote bushes on the open desert, some in 

 squaw-tea on the sand dunes, and some on the branches of smoke trees 

 in the washes. They like to sun themselves on the topmost twig of a 

 bush, hanging motionless and head downwards as though pinned there 

 by a shrike. If disturbed they drop to the middle of the bush and 



