12 CONTENTS 



PAGE 



31. Ekphe 697 



rosalis (Yellow Snake) 698 



chlorosoma (Mexican Green Snake) 700 



32. Arizona 701 



elegans (Faded Snake) . — 702 



33. Pituophis 705 



catenifer 



catenifer (Coast Gopher Snake) 707 



heermanni (Valley Gopher Snake) 715 



annectens (San Diegan Gopher Snake) 719 



deserticola (Desert Gopher Snake) 725 



stejnegeri (Utah Gopher Snake)- 729 



rutilus (Arizona Gopher Snake)_ _ 733 



vertebralis (San Lucan Gopher Snake) _ 737 



34. Lampropcltis . 740 



triangulum 



gentilis (Ringed King Snake) 743 



pyromelana (Arizona King Snake)_ 746 



zonata (California King Snake) 748 



getulus 



boylii (Boyle's Milk Snake) 752 



yumensis (Desert Milk Snake) 757 



conjuncta (San Lucan Milk Snake) 760 



splendida (Sonoran Milk Snake) 763 



californix (California Milk Snake) 765 



nitida (Lower California Milk Snake) 767 



catalinensis (Catalina Island Milk Snake) 769 



35. Contia 770 



tenuis (Sharp-tailed Snake) 771 



36. Rhinocheilus 773 



lecontei (Long-nosed Snake) 774 



37. Ficimia 777 



cana (Pug-nosed Snake) 777 



38. Hypsiglena 779 



ochrorhynchus 



ochrorhynchus (Spotted Night Snake) 780 



39. Natrix 733 



valida (Western Water Snake) 784 



