. The reptiles of western North America, an account of the species known to inhabit California and Oregon, Washington, Idaho, Utah, Nevada, Arizona, British Columbia, Sonora and Lower California. in one, or 2%. The supralabials are 8—8 insixty-two, or 95%; and 8—9 in three, or 5%. The infra-labials are 10—10 in forty, or 61%; 11 —11 in twelve, or187o; 9—10 insix, or 97o; 10—11 in five, or 87o; 11—9in one, or 2% ; and 9—9 in one, or 2%. The scale-rows are21 —19—17 in thirty-one, or 48%.; 21—21 —17 in twenty-four, or 38%,; 19—21 —19—17 in six, or 9%; 19—19—17in two, or 3%; and 23—21—17 in two, o
. The reptiles of western North America, an account of the species known to inhabit California and Oregon, Washington, Idaho, Utah, Nevada, Arizona, British Columbia, Sonora and Lower California. in one, or 2%. The supralabials are 8—8 insixty-two, or 95%; and 8—9 in three, or 5%. The infra-labials are 10—10 in forty, or 61%; 11 —11 in twelve, or187o; 9—10 insix, or 97o; 10—11 in five, or 87o; 11—9in one, or 2% ; and 9—9 in one, or 2%. The scale-rows are21 —19—17 in thirty-one, or 48%.; 21—21 —17 in twenty-four, or 38%,; 19—21 —19—17 in six, or 9%; 19—19—17in two, or 3%; and 23—21—17 in two, or 3%. The gas-trosteges vary from 153 to 181, males having from 160 to181, females from 153 to 177; the average in twenty-twomales is , in forty-three females, 167. The urostegesvary from 65 to 99, males having from 77 to 99, femalesfrom 65 to 88; the average in fourteen males is , inthirty-eight females, Distribution.—This subspecies is the common water-snake of the Sacramento and San Joaquin valleys of Cali-fornia from Shasta to Kern counties. It ranges west into Oc. Papfr~, AcAn. Sci., \ oi,. X [\ AN DF,NBt-R<.H| Plate 91.
Size: 1022px × 2445px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, booksubject, booksubjectserpents
