PLATE VIII 



Amphibia and Reptilia of Colorado 



Fig. 38. — Crolalus conjluentus. Prairie Rattlesnake (page 109). 



Fig. 39. — Crolalus cmtjluciilus. Prairie Rattlesnake. Skull showing fangs (page 109) 



Fig. 40. — Crolalus conjluentus. Prairie Rattlesnake. Showing fangsheaths (page 109) 



