130 Trans. Acad. Sci. of St. Louis. 



or oblong light spots, which on the lower part of the hack and on the 

 tail above exhibit a tendency to transverse light bands. The upper 

 part and sides of the head, the tibia and tail marked with similar dark 

 spots. Two half rings of black extending across the back between the 

 insertion of the legs. Fore legs each bordered with yellowish. Under 

 parts yellowish white, tinged in some specimens with greenish, espe- 

 cially between the fore legs. Chin and throat green or blue (sometimes 

 nearly black) and quite regularly reticulated with yellowish. In life, 

 the light spots, especially in young specimens, are of various shades of 

 red, orange, yellow and white. In the young and sometimes quite 

 large specimens the light dorsal spots exhibit a great tendency to form 

 transverse bands more or less continuous. 



Size. — From tip of snout to end of tail 290 mm.; head and body 96 

 mm.; fore limb 43 mm.; hind limb 80 mm.; tail 200 mm.; head 28 mm.; 

 width of head 25 mm. 



Habitat. — Kansas, Oklahoma, Missouri, Arkansas, 

 Texas, and New Mexico. Missouri localities: Jefferson, 

 Washington, St. Francois, Madison, Iron, Ozark, Stone, 

 Miller, and Phelps Counties. 



Habits. — Mr. John E. Fordyce of Little Rock, Ark., 

 wrote me, under date of July 14th, the following observa- 

 tions which he made on a specimen which came from 

 Mount Magazine, about 110 miles west of Little Rock: 

 ' ' The Mountain Boomer is a good jumper, and can catch 

 grasshoppers and other flying insects by jumping from a 

 foot to eighteen inches in the air after them. I put a 

 small Six-lined Lizard in his cage and he swallowed him 

 whole in two or three gulps. He seems very ferocious and 

 jumps at your hand with his large mouth wide open. The 

 natives call them Mountain Boomers and say he is deadly 

 poison." 



The Collared Lizard runs very swiftly, carrying the 

 tail over his back, and he is surely the most pugnacious of 

 our lizards. To catch one, when on a rock or open space, 

 is a very easy matter for two persons. One stands still 

 and watches the lizard, which will keep an eye on him, and 

 the other person sneaks around the lizard and grabs him 

 from behind. His bite does not amount to anything. 



Dates of capture. — May 2, 21; July 14; Sept. 1. 



