246 Palmer Generic and Family Names of Rodents. 



CASTORID-Sl. . 



Castoridae GRAY, London Medical Repository, XV, p. 302, April 1, 1821. 

 Mylagaulidse COPE, Bull. U. S. Geol. & Geog. Surv. Terr., VI, No. 2, p. 362, 

 Sept. 19, 1881. 



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



* Aulacodon Kaup, 1832 Aulacodon typus. 



Castor Linnseus, 1758 Castor fiber (type), C. moschatus. 



* Castor -omys Pomel, 1854 Chalicomys sigmodus. 



Chalicomys Kaup, 1832 Chalicomys jaegeri. 



Chelodus Kaup, 1832 Chelodus typus. 



f CA/orow?/s(Meyer)Schlosser, 1884 Chalicomys eseri. 



Conodontes Laugel, 1862 Conodontes boisvilletti. 



f Conodus Gervais, 1867-'69 Emended form of Conodontes. 



Diabroticus Pomel, 1848 Diabroticus schmerlingii. 



Eucastor Leidy, 1858 Castor tortus. 



Mylagaulus Cope, 1878 Mylagaulus sesquipedalis. 



Palseocastor Leidy, 1869 Steneofiber nebrascensis. 



Palaeomys Kaup, 1832 Palaeomys castoroides. 



Sigmogomphius J. C. Merriam, 1896. Sigmogomphius lecontei. 



Steneofiber Geoffroy, 1834 - 



Steneotherium Geoffroy, 1833.... 



Trogontherium G. Fischer, 1809. . Trogontherium cuvieri, T. iverneri. 



CASTOROIDID.SJ. 



Castoroididse J. A. ALLEN, Mon. N. Am. Rodentia, p. 419, Aug., 1877. 

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



Amblyrhiza Cope, 1868 Amblyrhiza inundata. 



Castoroides Foster, 1838 Castoroides ohioensis. 



f Leptomylus Cope, 1869 Misprint for Loxomylus. 



Loxomylus Cope, 1869 Loxomylus longidens. 



CAVIIDJE. 



Caviadae GRAY, London Medical Repository, XV, p. 304, April 1, 1821. 

 Hydrocharina GRAY, Thomson's Ann. Philos., XXVI, p. 341, Nov., 1825. 

 Hydrochoeridae GILL, Arrangement Fam. Mammals, p. 22, Nov., 1872. 

 Kerodontina GERVAIS, in D'Orbigny's Diet. Univ. d'Hist. Nat., XI, 

 p. 204, 1849. 



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



Anchymis Ameghino, 1886.. Cardiodon leidyi. 



Anoema F. Cuvier, 1809 Cavia cobaya. 



? Callodontomys Ameghino, 1889. . Callodontomys vastatus. 

 Capiguara Liais, 1872 New name for Hydrochoerus. (Con 

 sidered preferable by Liais because 

 derived from the Indian name.) 



