PART III: GLIRES, CHINCHILLIDJE— DINOMYID. XE. 845 
Name, authority, and date. Type or included species, and localities. 
Nevepiblema AMEGHINO, 1889 ....... New name for Zpiblema Ameghino, 1886. 
Perimys AMEGHINO, 1887 -.......... Perimys erutus, P. onustus, southern Patagonia. 
Pliolagostomus AMEGHINO, 1887 ..... Pliolagostomus notatus, southern Patagonia. 
Potamarchus BURMEISTER, 1885 ..... Potamarchus murinus, Paraná, Argentina. 
Prolagostomus AMEGHINO, 1887...... Prolagostomus pusillus, P. divisus, P. profluens, 
P. imperialis, southern Patagonia. 
Scotaeumys AMEGHINO, 1887 ........ Scotaeumys imminutus, southern Patagonia. 
Spheramys AMEGHINO, 1887 ........ Spheramys irruptus, southern Patagonia. 
Sphiggomys AMEGHINO, 1887........ Sphiggomys zonatus, southern Patagonia. 
Sphodromys AMEGHINO, 1887 ....... Sphodromys scalaris, southern Patagonia. 
Strophostephanos AMEGHINO, 1891 ... Strophostephanos iheringii, Paraná, Argentina. 
Tetrastylus AMEGHINO, 1886......... Megamys ? laevigatus, Paraná, Argentina. 
Viseaccia@® OKEN, 1816 -.-....--.--- Lepus chilensis, Mus laniger, Chile. 
CTENODACTYLIDZE. (See OCTODONTIDZE.) 
DASYPROCTIDZE. ^ 
FAMILIES AND SUBFAMILIES. 
Agoutide Gray, 1821. Dasyporcina Gray, 1825. 
Chloromina Gervais, 1849. Dasyproctide H. Smirn, 1842. 
Celogenina GERVAIS, 1849. 
Cologenyide Burmeister, 1854. 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included, species, and localities. 
Acouti I/ACSPEDE, 1/09----------27- Mus paca, South America. 
Cloromis E- Cuvinr;, 1812--—— 2222: The agoutis of South America. 
Celogenus F. CuviEgn, 1807 ......... Celogenus subniger, Tobago; C. fulvus, eastern 
South America. 
Gutias[rAIS 18720-55595 LE New name for Dasyprocta Illiger, 1811. 
Dasyprocta ILLicER, 1811 ........... Cavia aguti, Brazil and Guiana; C. acuschy, 
Guiana. 
Genyscelus Lirais, 1872............. Emendation of Celogenus Cuvier, 1807. 
Mamcoelogenysus Herrera, 1899.... Modification of Celogenus Cuvier, 1807. 
Mamdasyproctaus HERRERA, 1899.... Modification of Dasyprocta Illiger, 1811. 
Myoprocta THomas, 1903. ........... Cavia acuschy, Guiana. 
Osteopera HARLAN, 1825............ Osteopera platycephala (= Celogenys paca), Del- 
aware River. 
Paca HISGHER, S14 s2 22 227 522,525 3 Paca maculata (= Cavia paca), Guiana. 
Platypyga ILULIGER, 1811-.-.«.-.--.- Nomen nudum. Synonym of Dasyprocta Iliger. 
DINOMYIDZE. 
FAMILIES AND SUBFAMILIES. 
Dinomyina TrOscHEL, 1874. Dinomyide ArsroN, 1876. 
GENERA AND SUBGENERA. 
Name, authority, and date. Type or included species, and localities. 
Dinomys*PETERS, 1873-.------------ Dinomys branickii, Amable Marie, Peru. 

4 Vizcacia ScuiNz, 1824?; Viscacia RENGGER, 1830. 
^ Agoutid:e should properly be the designation of this group both because it is the 
earliest family name and because it is based on the earliest genus. 
