CROCODILIANS, LIZARDS, AND SNAKES. 

 Uta symmetrica Baird. 



319 



Catalogue 

 No. 



Number 

 of speci- 

 mens. 



Locality. 



From wliom ret'eivcil. 



Nature of specimen. 



2760 



2744 



15838-40 



8537 



14750-51 



17786 



22236-60 



15977 



19690-703 



17220-24 



17225-26 



17218-19 



16896-907 



16009-16 



16918-26 



16859-87 



16889-95 



16813-16 



15946 



21896-908 



Fort Yuma, Arizona . 



Grand Canyon of Colorado, 

 Arizona. 



V. Bailey , 



Fort Hiiachuca, Arizona. . . 



do 



do 



Jlerdo, Mexico 



Fort Huachuca, Arizona . . . 



Nogales, Arizona 



32 miles south of Nogales, 

 Arizona. 



Tucson, Arizona 



do 



Benson 



Wilcox 



Fisher 



U. S. Fish Commission . 



Wilcox 



P. L. Jouy 



do..: 



.do 

 .do. 

 -do 

 .do 

 -do , 



.do , 



-do. 



-do . 



.do , 



.do 



.do 



.do 



Fort Yuma, Arizona ... 

 Fort Yuma, California. 



U. S. Fish Commission . 

 Dr. E. A.Mearns 



Alcoholic, 

 do. 

 do. 



do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 

 do. 



do. 



do. 



do. 



do. 



do , 



do. 



do. 



do. 



do. 



UTA SCHOTTII Baird. 

 Via schottii Baird, Proc. Acad. Nat. Sci. Phila., 1858, p. 253. 



Head pointed ; narrow and nearly as high as wide. Dorsal scales in 

 two regular series along either side of the median line, which is occupied 

 by two or three rows of smaller ones. Tail probably twice the body. 



General color, nearly black; brownish below. Sides with broad, 

 dark bands; upper parts spotted thickly with light blue, especially on 

 the back. The sides of the tail with bands of the same. Sides of 

 belly in male blue, with white spots; chin blue. 



In this species the head is elongated and iwinted, compressed and 

 narrow, nearly or quite as deep as broad. The plates on the occiput 

 on either side of the large median one are unusually large, much more 

 than in Z'. ornata and tubercular. In front of the two verticals (1, 1) 

 the plates are 2, 3, 3 and 4 to the two large internasals. The nostrils 

 are quite oblique, though within the canthiis rostralis. There are four 

 rows of supraorbital ])lates exclusive of the inner margin. The scales 

 in the middle of the chest are much smaller than in its exterior. The 

 lateral folds ai)pear as in ornata. The solitary i)lates in the upper lateral 

 fold seem unusually large. The dorsal large scales are in two very 

 regular sei-ies on either side of the median line (making four), and 

 inclose an interval filled with two or three rows of ihuch smaller, 

 though irregular carinated scales. The large scales appear much 

 larger than in allied species. The tail is broken off, but is probably 

 about twice the head and body. 



The general pattern of coloration is much as in allied species, except 

 that the ground color api)ears nearly black all over. On the back, 

 however, the transverse darker bars may be traced, and there exhibit 

 a tendency to unite on the back. The upper parts and sides of body 



