THE ORDER RODENTIA 443
_Suborder_ SIMPLICIDENTATA 448
_Section_ SCIUROMORPHA, 448. _Family_ ANOMALURIDÆ, 449;
_Anomalurus_, 449. _Family_ SCIURIDÆ, 450; _Sciurus_,
450; _Rhithrosciurus_, 452; _Xerus_, 452; _Tamias_,
452; _Pteromys_ and _Sciuropterus_, 453; _Eupetaurus_,
454; Extinct genera, 454; _Arctomys_, 454; _Cynomys_,
455; _Spermophilus_, 456; Extinct genera, 457. _Family_
HAPLODONTIDÆ, 457; _Haplodon_, 457. _Family_ CASTORIDÆ,
457; _Castor_, 457. _Section_ MYOMORPHA, 459. _Family_
MYOXIDÆ, 459; _Myoxus_, 459; _Eliomys_, 459; _Graphiurus_,
459; _Claviglis_, 460; _Muscardinus_, 460. _Family_
LOPHIOMYIDÆ, 460; _Lophiomys_, 460. _Family_ MURIDÆ, 461;
_Hydromys_, 461; _Xeromys_, 461; _Platacanthomys_, 462;
_Gerbillus_, 462; _Pachyuromys_, 462; _Mystromys_, 462;
_Otomys_ and _Dasymys_, 462; _Malacomys_, 462; _Phlœomys_,
462; _Dendromys_, 463; _Cricetus_, 463; _Holochilus_,
464; _Sigmodon_, 464; _Rhithrodon_ and _Ochetodon_,
464; _Neotoma_, 464; _Hypogeomys_, 465; _Nesomys_, 465;
_Brachytarsomys_, 465; _Hallomys_, 465; _Eliurus_, 465;
_Phenacomys_, 466; _Arvicola_, 466; _Synaptomys_, 467;
_Myodes_, 467; _Cuniculus_, 470; _Fiber_, 470; _Neofiber_,
472; _Ellobius_, 472; _Siphneus_, 472; _Deomys_, 473;
_Mus_, 473; _Nesocia_, 475; _Golunda_, 476; _Uromys_,
476; _Chiruromys_, 476; _Hapalotis_, 476; _Mastacomys_,
476; _Acanthomys_, 476; _Echinothrix_, 477; _Typhlomys_,
477; _Cricetomys_ and _Saccostomus_, 477; _Pithechirus_,
477. _Family_ SPALACIDÆ, 477; _Spalax_, 477; _Rhizomys_,
477; _Bathyergus_, 478; _Georychus_ and _Myoscalops_,
478; _Heterocephalus_, 478. _Family_ GEOMYIDÆ, 478;
_Geomys_, 478; _Thomomys_, 478; _Dipodomys_, 479;
_Perognathus_ and _Heteromys_, 479. _Family_ DIPODIDÆ,
479; _Sminthus_, 479; _Zapus_, 480; _Dipus_, 480;
_Alactaga_, 480; _Platycercomys_, 480; _Pedetes_, 480.
_Section_ HYSTRICOMORPHA, 480. _Family_ OCTODONTIDÆ,
480. _Ctenodactylus_, 481; _Pectinator_, 481; _Octodon_,
481; _Habrocoma_, 482; _Schizodon_, 482; _Ctenomys_,
482; _Spalacopus_, 482; _Petromys_, 482; _Myopotamus_,
482; _Capromys_, 482; _Aulacodus_, 483; _Plagiodon_,
483; _Loncheres_ and _Echinomys_, 483; _Mesomys_, 483;
_Dactylomys_, 483; _Cercomys_, 483; _Carterodon_, 484;
Fossil forms, 484. _Family_ THERIDOMYIDÆ, 484. _Family_
HYSTRICIDÆ, 484; _Erethizon_, 484; _Synetheres_, 485;
_Chætomys_, 486; _Hystrix_, 486; _Atherura_, 487; _Trichys_,
487. _Family_ CHINCHILLIDÆ, 487; _Chinchilla_, 487;
_Lagidium_ and _Lagostomus_, 488; Extinct genera, 488.
_Family_ CASTOROIDIDÆ, 488; _Castoroides_, 488. _Family_
DASYPROCTIDÆ, 488; _Dasyprocta_, 488; _Cælogenys_, 489.
_Family_ DINOMYIDÆ, 489; _Dinomys_, 489. _Family_ CAVIIDÆ,
489; _Cavia_, 489; _Dolichotis_, 490; _Hydrochœrus_, 490;
Extinct genera, 491.
_Suborder_ DUPLICIDENTATA 491
_Family_ LAGOMYIDÆ, 491; _Lagomys_, 491. _Family_ LEPORIDÆ,
492; _Lepus_, 492.