THE MAMMALS OF MOUNT MAZAMA. 
223 
subgenus established by Professor Baird, for whom the present 
species is named. 
Pocket Gopher. Thomowys mazama, Merriam. 
Klamath Indian name, Mo-nana-tam-has. 
Abundant throughout the region. Common in the pumice 
meadows on Llao Rock and at numerous other places on the rim of 
Crater Lake where its little hills were thrown up every day; also 
common at Fort Klamath. 
Mountain Jumping Mouse. Zapus trinotatus montanus^ 
Merriam. 
Abundant in moist places grown over with grass or weeds. 
Specimens were secured at Crater Lake, Anna Creek Canyon, and 
Fort Klamath. 
Pacific Jumping Mouse. Zapus joac/^cus, Merriam. 
This new species, which is smaller and yellower than the 
mountain animal, was collected by Mr. Preble in the upper Rogue 
river valley at Prospect. 
Porcupine. Erethizon epixanthus^ Brandt. 
Rather common. Mr. Bailey saw fresh tracks several times 
near the spring at the head of Anna Creek, about ]/^ mile from 
the rim of Crater Lake. In the forest of Lodge-pole Pines (Pinus 
murrayana) between Crater Lake and Mt. Thielsen, 'barked' 
trees abound. 
Pika; Mountain Coney; Little Chief Hare. Ochotona 
schisticeps^ Merriam. 
Abundant at Crater Lake, where numerous specimens were 
collected. The Pika makes its home in the precipitous rocky 
slopes of the .lake rim, both on the outer and inner side, living 
among the loose slide rock and laying up little stores of plants for 
winter use. A small colony was found on Wizard Island in the 
Lake, where I shot and secured a specimen. Small colonies follow 
the canyon of Anna Creek down to an altitude of about 1,830 meters 
(6,000 ft.). 
