Howell—Ten Neio Marwots from North Amencd. 
17 
Marmota caligata cascadensis siibsp. nov. 
(^\SCA1)E HOARY MARMOT. 
Type, from Mt. Uaiiiier, Washiii^^tou(altitude (>000 leet). yVdidt female, 
No. 90,1:54, U. S. National Museum ( Puologic.al Surv(‘y Colleetiou ); 
Aujiustll, 1897, W. K. t'lsher; ori.iriual iiumher, A22. 
Characters . — Size lari>:e (ecpialliu^ olyrnpus and “ sibilaN* larg(M’ lliau 
caliyata); color similar to that of caligala, hut head and feet usually 
hrowuer and uuderparts darker; skull similar to that of sibila, hut 
relatively broader across zygomata and iuter-orl)ital r(\a;iou ; decidedly 
lai-fjer than that of either caliyata or okanagana.i 
Measnreaients. — .\ilult female (type): 1 otal lenj^th, 740; tail veitehiae. 
230; hind foot, 107. Skull: Adult male from Cascade Kiver (near 
head), Washiu^tou: Coudylo-hasal length, 100.2; zygomatic breadth, 
09.8; breadth of rostrum, 24.5. 
Remarks.—T\w Cascade Marmot differs from the Olympic Marmot iu 
being much whiter, and iu skull characters; from okanagana of the Sel¬ 
kirk" ami Cold Ranges and sibila of northern British Columbia iu 
whiter and hrowuer (less black) coloration above; and from caligala iu 
much larger size. It ranges from IMouut Rainier, MMshiugton, north to 
the Mount Baker Range, British Columbia. 
Marmota caligata nivaria subsp. nov. 
MONTANA HOARY MARMOT. 
Type from mountains near Upper St. Mary’s Lake, Aloutana (altitude 
about 6100 feet). Adult female. No. 72,235, U. S. National Museum 
(Biological Survey Collection); May 27, 1895, A. II. Howell; original 
number, 23. 
Characters .—Similar in size and skull characters to sibila, but colors 
much whiter, both above and below; skull closely similar to that of 
sibila, possibly averaging a little shorter ; compared with cascadensis the 
premaxilke are broader. 
Measurements.— Average of 4 adult females from type locality: Total 
length, 751; tail vertebrae, 224; hind foot, 105. Skull: .Average of 4 
adult females from same locality: Condylo-basal length, 102; zygomatic 
breadth, 65.7; breadth of rostrum, 23. 
Remarks.—Th\H form, although closely resembling sibila in skull char¬ 
acters, differs widely from it iu color, being, indeed, the whitest member 
of the’group. In addition to the series from the type locality, specimens 
have been examined from the Bitterroot and Salmon Rivei IMountaius, 
Idaho. 
* Marmota sibila Hollister, HiniUis. Miso. Coll., vol. No. 3;j, 1912, p. 1; type 
locality. Moose Pass. Alberta (not Arctomys sibila Woll'). 
Ulr'ctomys okanayanus KIpr, Narr..Iourn. to Shores of the Arctic Ocean, II, 1S:!C.. p. 
‘MG' type locality: The region occupied by the Okanagan Indians, on the borders of 
the’Rocky Mountains * * * |„,tween the Columbia and Fraser Rivers’’-hereby 
fixed in the Cold Range, British Columbia. 
