VI 
CONTENTS 
CHAPTER XXXI.— The Rodents, —Order Rodentia. 
PAGE 
General Characteristics of the Order—Teeth—Mouth—Distribution and Habits—African 
Flying Squirrels (AnomalWridoe)— The Squirrel Family ( Sciuridce) —Groove-Toothed 
Squirrel ( Rhithrosdurus )—Spiny Squirrels (Xerus) —True Squirrels (Sciurus) —European 
Squirrels—Distribution—North American Squirrels—Oriental Squirrels — Ground- 
Squirrels, or Chipmunks ( Tamias ) — Susliks, or Gophers ( Spermophilus ) — Prairie- 
Marmots ( Cynomys) —True Marmots ( Ardomys )—Distribution—Old World Species— 
American Species—Allied Extinct Rodents—Flying Squirrels—Lesser Flying Squirrels 
( Sciuropterus )—Distribution and Habits—Larger Flying Squirrels (Pteromys)— Woolly 
Flying Squirrel ( Eupetaurus) — Pigmy Squirrels ( Nannosciurus ) — The Sewellels 
( Haplodonticlcc )—Common Sewellel ( Haplodon )—Californian Sewellel—The Beavers 
(Castoridce) —European and American Species ( Castor )—Distribution of the European 
Beaver—Range of the American Species—Habits—Uses and Trapping of Beavers—- 
Extinct Beavers, .......... G5 
CHAPTER XXXII.—Rodents,— continued. 
The Mouse-Like Rodents.—T he Dormice ( Myoxidce )—Common Dormouse ( Muscardinus )— 
Squirrel-Tailed and Garden Dormice ( Myoxus) —Tree-Dormouse—Extinct Dormice 
—Jumping Mice and Jerboas ( Dipodidce) — The Jumping Mouse ( Zcipus ) — The 
Five-Toed Jerboas—Kirghiz Jerboa ( Aladaga )—Afghan Jerboa—Yarkand Jerboa 
(Euchoretes) —Broad-Tailed Jerboas ( Platycercomys) —Three-Toed, or True Jerboas 
(Dipus) — Habits of Egyptian Jerboa — African Jumping Hare ( Pedetes )—The 
Sminthus ( Sminthus) — The Mouse Tribe ( Muridce ) — Australian Water - Rat 
(Hydromys )—Queensland Rat ( Xeromys )—Malabar Spiny Mouse ( Platacanthomys )— 
The Gerbils ( Gerbillus )—Philippine Rat ( Phlceomys )—Hamsters and White-Footed 
Mice ( Cricetus )—Common Hamster and Its Habits—Species of White-Footed Mice— 
The Fish-Eating Rat ( Ichtliyomys) —Grooved-Toothed Mice (Rhithroclontomys and 
Rhithroclon) —Wood-Rats ( Neotoma )—African Crested Rat ( Lophiomys )—The Voles 
( Microtus) —Water-Vole—Short-Tailed Field-Vole—Bank-Vole— Alpine Vole—Other 
Species—Lemmings ( Myodes )—Banded Lemming ( Cuniculus )—Musquash (Fiber )— 
Mole-Like Voles (Ellobius and Siphneus )—Rats and Mice (Mus )—Brown Rat—Black 
Rat—House-Mouse—Long-Tailed Field - Mouse—Harvest - Mouse—Other Species—- 
Bandicoot Rats (Nesocia) —Bush-Rats ( Golunda )—Spiny Mice (Acomys) —Jerboa-Rats 
(Hapalotis) —Lichtenstein’s Rat (Mastacomys) —Mole-Rats (Spalacidce )—Great Mole-Rat 
(Spalax) —Bamboo-Rats (Rhizomys )—Cape Mole-Rats (Bathyergus )—Naked Sand-Rats 
(Heterocephalus )—American Pouched Rats (Geomyidce )—Pocket - Gopher (Geomys )— 
Northern Pocket-Gopher (Thomomys) —Kangaroo-Rats (Dipodom.ys) —Pocket-Mice 
(Perognathus and Heteromys), . . . . . . . .104 
CHAPTER XXXIII.—Rodents,— continued. 
The Porcupine-Like Rodents.—G eneral Characters of the Group—The Octodont Tribe 
(Octodontidce )—The Gundi (Ctenodadylus )— The Degu ( Octodon )—The Tucotucos 
(Ctenomys )—The Coypu (Myopotamus )—The Hutias (Capromys — Plagiodon —The 
Cane-Rat (Aulacodus )—Other Genera—The Porcupines (Hystricidce )—Canadian Porcu¬ 
pine (Erethizon) —Tree-Porcupines (Synetheres )—Brazilian and Mexican Species—Thin- 
Spined Porcupine (Ghcetomys )—True Porcupines (Hystrix) —Brush-Tailed Porcupines 
(Atherura) —Gunther’s Porcupine (Trichijs )—Chinchillas and Viscachas (Chinchillidce) 
—True Chinchillas (Chinchilla )—Common Species—Short-Tailed Species—Cuvier’s 
Chinchilla (Lagidium )—The Viscacha (Lagostomus )—Description of a Viscacliera— 
Agutis and Pacas (Dasyprodidce )—The Argutis (Dasyproctai)— Common Species—Aguchi 
—The Pacas (Coelogenys) —Branick’s Paca (Dinomys )—The Cavies (Caviidce )—True 
Cavies (Cavia )—Restless Cavy—Cutler’s Cavy—Guinea-Pig—Bolivian Cavy—Rock- 
Cavy—Patagonian Cavy (Dolichotis) —Carpincho, or Capivara (Hydrochcerus), . 
154 
