302 



REPORT OF NATIONAL MUSEUM, 1898. 



less than twice the length of the head and body. Total length, 533 mm. ; 

 tail, 450 mm. ; body, 135 mm. ; from collar to end of muzzle, 56 mm. 



Color above sea green; a narrow black cross band separates the 

 nuchal from the dorsal region; a broader black band, which presents a 

 convexity anteriorly, crosses the latter anterior to its middle. Between 

 these some indistinct undulatory bands, three similar on the posterior 

 dorsal region, followed by numerous caudal annuli, which become very 

 broad. Beneath, bluish green, darkest on the gular region; tail and 

 femora beneath yellow. 



This is the largest species of the genus and is handsomely colored. 

 It appears to be contined to the cape region of Lower California. It is 



Fig. 35. 



Uta thalassina Cope. 



X§. 



La Paz, Lower California. 



C':il. Nil. li;B35, U.S.N. M. 



regarded by Boulenger as the type of a distinct genus, on account of 

 the smaller pholidosis of the tail. The XT. mearnsii furnishes such a 

 complete transition to the other forms of the genus that this course 

 does not seem to be necessary. 



