Note: This check list is based upon actual specimens in the Park and
other collections, according to Dr. Royal Brunson, Montana State
University.
Reptiles
Great Basin Garter Snake, _Thamnophis elegans vagrans_
A large garter snake of mountainous areas, usually with large spots.
Great Plains Red-sided Garter Snake, _Thamnophis ordinoides
parietalis_
Dorsal stripes varying from yellow to blue or black. Usually found
near water.
Hypothetical List:
Rubber Boa, _Charina bottae utahensis_
May occur in rock slides or, possibly, in forested areas, on either
side of the Divide.
Gopher Snake, _Pituophis catenifer sayi_
May occur along eastern boundary (Great Plains).
Yellow-bellied Blue Racer, _Coluber constrictor mormon_
May occur on eastern boundary of Park along border of Great Plains.
Painted Turtle, _Chrysemys picta_
May occur in ponds and sluggish waters from Upper Sonoran Zone to
Canadian Zone.
Western Skink, _Eumeces skiltonianus_
May occur in Transition Zone along western border of Park.
[Illustration: Northern Alligator Lizard]
Northern Alligator Lizard, _Gerrhonotus coeruleus principis_
May occur in Transition Zone along western border of Park.
Amphibians
Tiger Salamander, _Ambystoma tigrinum melanostrictum_
Ground color either black or bluish-black, with large spots or
blotches of yellow.
Long-toed Salamander, _Ambystoma macrodactylum_
Ground color black or dark brown; wide band of yellow extends from
back of head to tip of tail.
Northwestern Toad, _Bufo boreas boreas_
Widely distributed over entire Park. (Also known as Columbian,
Northern, or Western Toad.)
[Illustration: Western Spotted Frog]
Western Spotted Frog, _Rana pretiosa pretiosa_
Widely distributed over entire Park. (Also known as Western or Pacific
Frog.)
Green Frog, _Rana clamitans_
One specimen, from Bowman Lake. (Chicago Natural History Museum)
Tailed Frog, _Ascaphus truei_
Should be fairly common, although it is not often taken.
Pacific Tree-toad, _Hyla regilla_
Small size and disks on fingers and toes identify this species. Common
throughout Park.