70 UNIVERSITY OF COLORADO STUDIES 



This swift is quite similar to S. consobrinus, from which it diiifers 

 in the arrangement of the supraocular plates. These are in five rows, 

 an inside row of small plates, followed by two rows of medium-sized 

 plates, with two outside rows of small plates. In coloration it is also 

 much the same as S. consobrinus. There are two yellowish stripes on 

 each side separated by a dusky area covering from seven to nine rows 

 of scales. In this dusky area, however, there is a row of more or less 

 crescent-shaped spots of dark brown or black. There are also two 

 rows of these same spots dorsally between the two upper Hght stripes. 

 5. graciosus is a species of the Great Basin, ranging from Oregon 

 south into Mexico. 



Reported by Gary, I.e., from Escalante Hills, valleys of Texas and Evacuation 

 Creeks; Rio Blanco Co.; Grand Valley, north of Mack, Colo.; Rifle, Coventry and 

 McElmo, Colo. 



Genus HOLBROOKIA Girard 



Holbrookia Girard, Proc. A.A.A. Sci., Vol. IV, p. 201, 1851. 



Scales small and smooth; throat with a gular fold ; tail shorter or 

 longer than the body; ear openings covered; femoral pores present; 

 body depressed; size small. 



The Spotted Lizards, Holbrookia, range from Wyoming and Utah 

 south into Mexico, from Kansas into California. 



Holbrookia maculata Girard 

 Spotted Lizard (Figures 7, 8 and 9) 

 Holbrookia maculata Girard, Proc. Am. Asso. Adv. Sci., Vol. IV, p. 201, 1851. 

 Holbrookia maculata — Cope, Rept. U.S.N. M., p. 297, 1898 (Colorado Springs, 

 Colo.). 



Holbrookia maculata maculata — Yarrow, Wheeler Survey, Vol. V, p. 563, 1875 

 (Denver and Colorado Springs, Colo.). 



Holbrookia maculata propinqua — Yarrow, Wheeler Survey, Vol. V, p. 564, 1875 

 (Twin Lakes, Colo.). 



Head somewhat rounded anteriorly, widest in the region of the 

 eyes, not well marked off from the neck, i .00 to i . 25 in the length of 

 the hind foot, profile rather abruptly sloping; length of the tail less 

 than the length of the body from the tip of the snout to the vent; size 

 small, total length less than six inches. 



