546 PROCEEDINGS OF THE ACADEMY OF ^ "^ "^ [Aug., 



on the abdomen. Under side of thigh pale blue; l^ack of upper arm 

 and front of forearm green. 



In this species the postinfralabials below the angle of the jaw are 

 usually in but one or two rows, but occasionally, as in the male above 

 described, they are as numerous as in H. maculata. 

 TJta stansburiana B. & G. 



Femoral pores in eighteen specimens 13-18. Greatest length 150 

 mm. (tail 93). 

 Uta ornata B. & G. 



Femoral pores 12-16, usually about 13. Greatest length 130 mm. 

 (tail 78). 



The chief difference between U. ornata and U. symmetrica is said to 

 be^ that in the former the hind leg is usually shorter than the distance 

 from the collar to the vent, while in the last it is longer. In nineteen 

 U. ormita from Pecos and Seymour, I find that 3 d^ and 1 ? have the 

 hind leg longer than the distance stated; -1 c^ and 1 9 have it equal; 

 and in 10 ? it is shorter. 

 Soeloporus spinosus clarkii B. & G. 



Four specimens received in May, 1901, from Pecos (now Nos. 15,743- 

 46 Academy collection) are referred to this subspecies. They have 

 the hinder large supraoculars in contact with the parietals and fronto- 

 parietals ; the preauricular scales are broader than long ; femoral pores 

 12-13; and an interrupted cervical collar. 



The distinction between this form and *S'. magister is of doubtful 

 validity, a specimen from Tucson, Arizona, now before me, which on 

 its preauricular scales would be assigned by ^Ir. Stejneger to the last 

 name, is less distinctly banded on the forearms than two of the Pecos 

 specimens. 

 Sceloporus torquatus poinsetti b. & G. 



Apparently very common. 

 Sceloporus consobrinus B. & G. 



A large number of specimens are well distinguished from S. undu- 

 latus by color characters, as well as by the slight differences in scu- 

 tellation pointed out by Cope. 



Phrynosoma cornutum (Harl.)- 

 Pbrynosoma modestum Girard. 

 Cnemidophorus sexlineatus sexlineatus (L.). 



Two from Pecos do not differ materially from eastern examples ex- 

 cept in having coarser dorsal scales, but four others collected at Sey- 



^ Stejneger, No. Am. Fauna, No. .3 p. 107. 



