Ring Species

RING SPECIES
Salamanders Ensatina eschscholtzii, Ensatina klauberi (Central Valley, California)Diagram Mayr, WEI, p.184

herring gull, lesser black-backed gull Larus argentatus, Larus fuscus
Dawkins, AT, p.311


POLYTYPIC SPECIES
Kangaroo rat. Mayr, WEI,p.164, diagram. 35 sub-species Western USA.