256 



PROCEEDINGS OF THE NATIONAL MUSEUM 



Ambystoma tigrinum 



Scaphiopus hammondi 



Bufo woodhousei 

 Hyla arenicolor 

 Rano pipiens 

 Crotaphytus collaris 

 Holbrookia maculata 

 Phrynosoma douglassi 

 Sceloporus graciosus 

 Sceloporus undulatus 

 Urosaurus ornatus 



■11,300 



Eumeces multivirgatus 

 Eumeces obsoletus 

 Cnemidophorus velox 

 Masticophis taeniatus 

 Pituophis melanoieucus 

 Thamnophis elegans 

 Crofalus atrox 



Crotalus viridis 



I I I I I I I I I 



5800 62 66 70 74 78 82 86 9000 



ELEVATION-feet 



Figure 3. — Schematic vertical distribution and relative abundance of some amphibians 

 and reptiles in the Zuni region. (The horizontal line indicates marginal occurrence; the 

 widest part of each polygon is the approximate elev^ation of greatest abundance irrespec- 

 tive of habitat considerations noted in the text.) 



