Vi CONTENTS 
CHAPTER XXXI.—THE RopENtTs,—Order Rodentia. 
PAGE 
General Characteristics of the Order—Teeth—Mouth—Distribution and Habits—African 
Flying Squirrels (Anomaluride)—The Squirrel Family (Sciwride)—Groove-Toothed 
Squirrel (Lhithrosciurus)—Spiny Squirrels ( Xerus)—True Squirrels (Sciwrus)—European 
Squirrels—Distribution—North American Squirrels—Oriental Squirrels—Ground- 
Squirrels, or Chipmunks (Tamas) —Susliks, or Gophers (Spermophilus) — Prairie- 
Marmots (Cynomys)—-True Marmots (Arctomys)—Distribution—Old World Species— 
American Species—Allied Extinct Rodents—Flying Squirrels—Lesser Flying Squirrels 
(Sciwropterus)—Distribution and Habits—Larger Flying Squirrels (Pteromys)— Woolly 
Flying Squirrel (Zupetawrus)— Pigmy Squirrels (Nannosciwrus)— The Sewellels 
(Haplodontide)—Common Sewellel (Haplodon)—Californian Sewellel—The Beavers 
(Castoride)—European and American Species (Castor)—Distribution of the European 
Beaver—Range of the American Species—Habits—Uses and Trapping of Beavers— 
Extinct Beavers, . Z : é ; : : ‘ F ; 65 
CHAPTER XXXII.—RopENts,—continued. 

Tar Moussz-Lixe Ropents.—The Dormice (Myoxide)—Common Dormouse (Muscardinus)— 
Squirrel-Tailed and Garden Dormice (Myoxus)—Tree-Dormouse—Extinct Dormice 
—Jumping Mice and Jerboas (Dipodide)— The Jumping Mouse (Zapus)— The 
Five-Toed Jerboas—Kirghiz Jerboa (Alactaga)—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 (Muridw) — Australian Water - Rat 
(Hydromys)—Queensland Rat (Xeromys)—Malabar Spiny Mouse (Platacanthomys)— 
The Gerbils (Gerbitlus)—Philippine Rat (Phlewomys)—Hamsters and White-Footed 
Mice (Cricetus)—Common Hamster and Its Habits—Species of White-Footed Mice— 
The Fish-Eating Rat (Ichthyomys)—Grooved-Toothed Mice (Rhithrodontomys and 
Rhithrodon)—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 (Cuniculws)—Musquash (Hiber)— 
Mole-Like Voles (Hllobius 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 (Aconvys)—Jerboa-Rats 
(Hapalotis)—Lichtenstein’s Rat (Mastacomys)—Mole-Rats (Spalacide)—Great Mole-Rat 
(Spalax)—Bamboo-Rats (Rhizomys)—Cape Mole-Rats (Bathyergus)—Naked Sand-Rats 
(Heterocephalus)—American Pouched Rats (Geomyidw)— Pocket - Gopher (Geomys)— 
Northern Pocket-Gopher (Thomomys)— Kangaroo- Rats ei! S Pocket- Mice 
(Perognathus and Heteromys), ‘ : 2 : ‘ f . 104 
CHAPTER XXXIII.—Ropgnts,—continued. 
THE PorcuPINE-LIkE RopENnts.—General Characters of the Group—The Octodont Tribe 
(Octodontide)—The Gundi (Ctenodactylus)—The Degu (Octodon)—The Tucotucos 
(Ctenomys)—The Coypu (Myopotamus)—The Hutias (Capromys —Plagiodon —'The 
Cane-Rat (A ulacodus)—Other Genera—The Porcupines (Hystricide)—Canadian Porcu- 
pine (Hrethizon)—Tree-Porcupines (Synetheres)—Brazilian and Mexican Species—Thin- 
Spined Porcupine (Chetomys)—True Poreupines (Hystriz)—Brush- -Tailed Poreupines 
(Atherura)—Giinther’s Poreupine (Trichys)—Chinchillas and Viscachas (Chinchillide) 
- True Chinchillas (Chinchilla)j—Common Species—Short-Tailed Species—Cuvier’s 
Chinchilla (Lagidiwm)—The Viscacha (Lagostomus)—Description of a Viscachera— 
Agutis and Pacas (Dasyproctide)—The Argutis (Dasyprocta)—Common Species—Aguchi 
—The Pacas (Cologenys)—Branick’s Paca (Dinomys)—The Cavies (Caviide)—True 
Cavies (Cavia)—Restless Cavy—Cutler’s Cavy—Guinea-Pig—Bolivian Cavy—Rock- 
Cavy—Patagonian Cavy (Dolichotis)—Carpincho, or Capivara (Hydrocherus),  . 5 Ala 
