Proceedings of the California Academy of Sciences V10 (1920)

Includes A Further Study Of Variation In The Gopher-Snakes Of Western North America; Description Of A New Species Of Rattlesnake From Lower California; Description Of A New Subspecies Of Boa From Utah; Description Of A New Lizard From Lower California. Due to the very old age and scarcity of this book, many of the pages may be hard to read due to the blurring of the original text.