Generic and Family Names of Bodents. 251 



Erethizoni F. Cuvier, 1822 Hystrix dorsata. 



Hi/stricops Leidy, 1858 Hystrix venustns. 



Ouychura Brookes, 1828 Onychura spinosa. 



Plectrochoerus Pictet, 1843 ... Plectrochcerus moricandi. 



Sciamys Ameghino, 1887 Sciamys principalis, S. varians. 



Sinoetherus' F. Cuvier, 1822. . . Hystrix prehensilis. 

 Sphiggurus^ F. Cuvier, 1822... Sphiggurus spinosus, 

 Steiromys Ameghino, 1887. ..... Stt'iromys detentus, S. duplicatus. 



GEOMYIDAE. 



Geomyina Box.\parte, Conspectus Syst. Mastozoologipe, 1850. 



Geomyinae B.\ird, Mamm. N. Am., pp. xxx, 366, 1857. 



Geomyidae Gill, Arrangement Fara. Mamm., p. 21, Nov., 1872. 

 + Pseudotomina Gr.\y, Thomson's Ann. Philos., XXVI, p. 342, 1825. 

 X PaeudostomidaB Gervais, Ann. Sci. Nat., Paris, 3* ser., XX, p. 245, 1853. 



Name, authority, and date. Type or included species. 



Ascomys Lichtenstein, 1825. . . Ascomys canadensis (= Mus bursa- 



rins). 

 Cratogeomys Merriam, 1895. . . Geomys merriami. 

 Diplostoma Eatinesque, 1817.. Diplostoma fusca (=Mus bursarius). 



Geomys Rafinesque, 1817 Geomys pinetis (= Mus tuza Ord). 



Gyinnoptycfius Cope, 1873 Gymnoptychus cJirysodon, G. nasuius, G. 



trilophus, and G. minutus. 



Heliseomys Cope, 1873 Heliscomys vetus. 



Heterogeomys INIerriam, 1895. Geomys hispidus. 

 Macrogeomys Merriam, 1895. . Geomys heterodus. 

 Orthogeomys Merriam, 1895.. . Geomys scalops. 



Oryctomys Eydoux & Gervais, Five subgenera : Diplostoma, Sacco- 

 1836. phorus, Saccomys, Poephagomys, 



Ctenomys. 

 Pappogeomys Merriam, 1895. . Geomys bulleri. 

 Platy geomys Merriam, 1895. . . Geomys gymnurus. 



Pseudostoma Say, 1823 Pseudostoma bursaria 



Saccophorus Kuhl, 1820 Mus bursarius. 



Thomomys Maximilian, 1839. . Thomomys rufescens. 



*?Tucanus Rafinesque, 1815 Nomen nudum? 



Zygogeomys Merriam, 1895. . . Zygogeomys trichopus. 



' Emended to Erethison ( Waterhouse, 18.39); Eretison (McMurtrie,1831); 

 Eretizon (Cuvier, 1825) ; Erythizon (Alston, 1876). 



^Emended to Sinetheres (Agassiz, 1842); Sincetherus (Cuvier, 1825); 

 Synaetheres (Gervais, 1859) ; Synetheres (G. Cuvier, 1829) ; Synoetheres 

 (Lund, 18.39). 



^Emended to Sphingurus (Waterhouse, 1848) ; Spiggurus (Gray, 1847) • 

 Si)igurus (Swainson, 1835). 



