Generic and Family Names of Rodents. 253 



Microdipodops Merriam, 1891. Microdipodops megacephalus. 



Otognosis Cones, 1875 Otosnosis longimembris. 



Perodipus Fitzinger, 1867 Dipodomj'S agilis. 



Peiognathus Maximilian, 1839. Perognathus fasciatus. 



PleuroUcif-t Cope, 1878 Pleurolicus sulcifrons. 



Saccomys F. Caviar, 1823 Saceomys anthophihis. 



HYSTRICIDAE. 



Histricidae Gray, London Med. Repository, XY, p. 304, April 1, 1821.- 

 Hystrixideae Lesson, Nouv. Tableau R«gne Animal, INIamm., p. 90, 1842. 



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



Acantherium Gray, 1847 Acanthion javanicum, A. tlemingii. 



Acanthion Cuvier, 1822 Acantliion javanicum. 



Acanthochoerus Gray, 1866. . . Acantboehoerus bartlettii, A. grotei. 



Atherurus F. Cuvier, 1829 Hystrix fa.sciculata. 



* Eucritus G. Fiscber, 1817 (?) 



H[/st)'icotherium Croizet, 1853 . . . Hystrix refossa. 



Hystrix Linnajus, 1758 Hystrix cristata, H. prebensilis, H. 



dorsata, H. macroura, H. bracbyura. 



Lamprodon Wagner, 1848 Lamprodon priynigenius. 



CEdocephalus Gray, 1866 Acantbion cuvieri. 



* Oreojin/s Aymard, 1854 Oreomys daveris. 



Trichys Giintber, 1876 Tricbys lipura. 



ISCHYROMYIDiE. 



Ischyroinyidx Alston, Proc. Zool. Soc. London, 1876, pp. 67, 78. 

 Name, autliority, and date. Type or ineluded species. 



Colonomys Marsb, 1872 Colonomys celev. 



Colotaxis Cope, 1873 Colotaxis crlstutus. 



Ischyromys Leidy, 1856 Ischyromys typus. 



? Mysops Leidy, 1871 Mysops minimus. 



Paramys Leidy, Nov. 28, 1871 . . Paramys delicatus, P. ddicatior, P. dcli- 



calissimus. 



Pseudoiomus Cope, 1872 Pseudotnmus hians. 



Sciuravus Marsb, June 21, 1871. ScinraviLs nllidus, S. imdans. 



? Scinroiiv/s Scblosser, 1884 Sciuromys rayUixi. 



Syllophudus Cope, ISSi New name for Mysops Leidy, 1871 



(erroneously said to be preoccupied). 



Taxymys Marsh, 1872 Taxymys lucaris. 



TiHomys Marsb, 1872 Tillomys senex, T. parvus. 



LEPORIDiE. 



Lagidae Schulze, Helios, XIV, p. 82, 1897. 



Leporidae Gray, London Medical Repository, XV, p. 304, April 1, 1821. 



Lepusidae Gkrvais, Ann. Sci. Nat, o^^ser., XX, p. 246, 1853. 



58— Biol. Soc. Wash., Vol. XI, 18<J7 



