. Bulletin - United States National Museum. Science. VARIATIONS OF GARTER-SNAKES. 177 keels). The spots are not usiiall}" distinct upon the scales, however, owing to the darkness of the ground color. Interspaces on the skin white or bluish white, never red exce])t occasionalh" immediately along the lateral stripe. Stripes greenish or bluish, usually tinged with yellow. Ventral surface greenish or bluish slate. Ventral spots usually well defined. Sides of head greenish, yellowish, or ])luish; abials partly margined with black. Habits and habitat relations.—Even in the case of this wel
. Bulletin - United States National Museum. Science. VARIATIONS OF GARTER-SNAKES. 177 keels). The spots are not usiiall}" distinct upon the scales, however, owing to the darkness of the ground color. Interspaces on the skin white or bluish white, never red exce])t occasionalh" immediately along the lateral stripe. Stripes greenish or bluish, usually tinged with yellow. Ventral surface greenish or bluish slate. Ventral spots usually well defined. Sides of head greenish, yellowish, or ])luish; abials partly margined with black. Habits and habitat relations.—Even in the case of this well-known form but little has been recorded on the habitat relations. The expe-. FiG. 77 .—Forests in the Porcui'ixe Mountains, Michigan. .sirtalis is of GENERAL DISTRIUUTION IN SUCH FORESTED REGIONS IN EASTERN UNITED STATES. rience of the writer indicates that it is cjuite generall}^ distributed in the Eastern forest region, for while it is found most commonly in the vicinit}" of water, it is not uncommon in the clearings, woods, and thickets on the neighboring hills (fig. 77). The food consists principally of frogs, toads, salamanders, earth- worms, and various insects. Whether or not it feeds to any great extent upon tadpoles and fish is undetermined. Garman (1892, 268) states that they eat these animals, and I have observed them to. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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