APPENDIX. 
223 
FOUR-STRIPED CHIPMUNK. 
Tamias quadrivittatus — Wagn. 
An exceedingly abundant little animal everywhere in the 
mountains and parks. 
SAY’S CHIPMUNK. 
Tamias lateralis — Allen. 
Common in the pine timber, especially in rocky places of the 
higher ranges. 
LARGE GROUND SQUIRREL. 
Spermophilus grammurus — Bachm. 
This is a large and conspicuous species, with its long, bushy 
tail looking much like a regular tree-squirrel. It is common in 
rocky places on the foot-hills. 
THIRTEEN-STRIPED GROUND-SQUIRREL. 
Spermophilus tridecemlineatus — Aud. & Back. 
Very common in open places. 
THE PRAIRIE-DOG. 
Cynomys ludovicianus — Baird. 
One of the commonest and best known animals of the country, 
the colonies of which dot the prairie on every hand. 
THE YELLOW-BELLIED MARMOT. 
Arctomys flaviventris — Aud. & Backm. 
Apparently confined to the foot-hills and mountains, where it 
is common. 
Family MURID^E. 
ROCKY MOUNTAIN RAT. 
Neotoma cinerea — Bd. 
Found in abundance in the mountains of Colorado. They 
often come about the house and take up their residence, proving 
very mischievous and undesirable from their propensity to steal 
and hide everything they can get hold of and carry off. Among 
the articles which Mrs. Maxwell has found in their retreats, are 
bushels of weeds of various kinds, chips of wood, cow-manure, 
old stockings, tent-blocks and ropes, pieces of crockery, knives, 
forks and a broken doll. 
