PART III: GLIRES, EOCARDIDJE—ERETHIZONTIDAE. 847 
EOCARDIDZE. 
FAMILIES. 
FEocardide AMEGHINO, 1891, 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included species, and localities. 
Dicardia AMEGHINO, 1891 .......... Dicardia maxima, D. modica, D. excavata, south- 
ern Patagonia. 
Eocardia AMEGHINO, 1887 .......... Eocardia montana, Rio Santa Cruz, Patagonia. 
Hedymys AMEGHINO, 1887.......... Hedymys integrus, southern Patagonia. 
Luantus AMEGHINO, 1899........... Luantus propheticus, Patagonia. 
Palaeocardia AMEGHINO, 1902 ...... Palaeocardia mater, Patagonia. 
Phanomys AMEGHINO, 1887 ......... Phanomys mixtus, southern Patagonia. 
T Procardia AMEGHINO, 1891 ....... Eocardia eliptica, southern Patagonia. 
Schistomys AMEGHINO, 1887......... Schistomys erro, southern Patagonia. 
Tricardia AMEGHINO, 1891.......... Eocardia divisa, southern Patagonia. 
ERETHIZONTIDZE.^ 
FAMILIES AND SUBFAMILIES. 
Acaremyinae AMEGHINO, 1902. Erethyzonina BoNAPARTE, 1845. 
Cercolabina Gray, 1843. Erethizontide THomas, Apr. 1897. 
Cercolabide AMEGHINO, 1887. Sphingurine ArsTON, 1876. 
Chetomyine THomas, 1897. Steiromuinae AMEGHINO, 1902. 
Coendidae TROUESSART, Oct., 1897. Synetherina^ GrrRvais, 1849. 
GENERA. AND SUBGENERA. 
Name, authority, and date. Tupe or included. species, and localities. 
Acaremys AMEGHINO, 1887.......... Acaremys murinus, A. minutus, A. minutissimus, 
southern Patagonia. 
Cercolabes BRANDT, 1835 ........... New name for Coendow Lacépéde, 1799. 
Chetomys Gray, 1843225... 252.2 .2- Hystrix subspinosus, Brazil. 
Coendou LAcÉPEDE, 1799 ........... Hystrix prehensilis, tropical America. 
Echinoprocta Gray, 1865 ........... Erethizon rufescens, Colombia. 
Echinothrix Brookks, 1828 ......... Hystrix dorsata, eastern Canada. 
-Eosteiromys AMEGHINO, 1902........ Kosteiromys homogenidens, Patagonia. 
Erethizon F. Cuvier, 1822.......... Hystrix dorsata, eastern Canada. 
Eucritus G. PiscHEsnR, 1817.......-.. New name for Coendou Lacépóde, 1799. 
DEluStyiCODS lamin, SOB. ----- 222. Hystrix venustus, Niobrara River, Nebraska. 
Laboura BrnrzBERG, 1828.......:.... New name for Coendou Lacépóéde, 1799. 
Mamsynetheresus Herrera, 1899.... Modification of Sinetheres F. Cuvier, 1822. 
Onychura Brookes, 1828 ........... Onychura spinosa, tropical America. 
Plectrocherus PicrET, 1843 ......... Plectrocherus moricandi, Bahia, Brazil. 
Protacaremys AMEGHINO, 1902 ...... Protacaremys prior, P. avunculus, P. pulchellus, 
Patagonia. 
Sciamys AMEGHINO, 1887 ...... -... Sciamys principalis, S. varians, S. Patagonia. 
Sinetheres F. CuvrEn, 1822 ......... Hystrix prehensilis, South America. 
Sphiggurus F. Cuvier, 1822? ....... Sphiggurus spinosus, Brazil. 
Steiromys AMEGHINO, 1887.......... Steiromys detentus, S. duplicatus, S. Patagonia. 
Synetheres Lesson, 1842............ Emendation of Sinetheres F. Cuvier, 1822. 
? Coendid:e is based on an earlier genus, but Erethizontid:ze is an earlier family 
name. 
P Synetherin:e Trovurssarr, 1881. 
