AMPHIBIA AND REPTILIA OF COLORADO 263 



Tantilla nigriceps Kennicott 

 Texas Black-headed Snake 



Lajunta, data incomplete (C.C.); Boulder, December, 1914 (500). 



The Boulder specimen of this snake was taken from a trench 

 which was being dug for pipe lines in the city limits. Just how far 

 below the surface the snake was when uncovered was not learned. 

 The record of this species in Boulder is apparently the most northern 

 for the species, and places it nearer the mountains than it has previ- 

 ously been taken.' 



Family Crotalidae 

 Crotalus confluentus Say 

 Prairie Rattlesnake 



Near Paradox Valley, June 1914 (452); Paradox Valley, June 15, 1914 (455); Gypsum 

 Creek, tributary of the Dolores River, June, 1914 (456); reported common in the San 

 Miguel and Dolores River regions, south and west of Naturita in 1914 by Henderson. 



Family Chelydridae 



Chelydra serpentina (Linnaeus) 



Snapping Turtle 



Several specimens of this turtle have been taken in the tributaries 

 of Boulder Creek near Boulder during the past two years. One 

 specimen, brought to the Museum of the University of Colorado 

 during March, 1914, had been dug out of a straw pile where it was 

 wintering, and was quite stupid when received. After being placed 

 in the tank in the building it soon became active and remained so, 

 although it was several weeks before active turtles were found out of 

 doors. 



Family Testidinidae 



Chrysemys belli (Gray) 

 Bell's Painted Turtle 



Greeley, March 9, 1903 (C.C.); Wray, June, 1914. 



Bell's Turtle is reported as common, often abundant, in many of the 

 ponds and lakes of eastern Colorado. 



' Univ. Colo. Studies, Vol. X, p. io6, igi3. 



