^ 
99 INDEX GENERUM MAMMALIUM. 
Eubalena Gray, 1864. Cete, Balzenide. 
Proc. Zool. Soc. London, 1864, 201-202; Cat. Seals & Whales Brit. Mus., 91-98, 
figs. 6-7, 1866. 
Type: Eubalzna australis (Desmoulins), from the Cape of Good Hope. 
Eubalena: £9, well, typical; -+ Balena. 
Eubradys Leipy, 1853. Edentata, Megatheriide. 
Proc. Acad. Nat. Sci. Phila., for 1852-53, No. VII, 241, 1853; Ancient Fauna 
Nebraska (Smithsonian Cont. Knowledge, VI, art. vir), 10, June, 1853. 
Znbradis MArscHaty, Nomenclator Zool., Mamm., 5, 1873 (misprint). 
Type: Eubradys antiquus Leidy, from the Ashley River, South Carolina. 
Extinct. Based on ‘‘a fragment of a molar tooth." 
Eubradys: co, well, typical; paóvs, slow—i. e., a typical sloth. 
Eucardiodon AwEanrwNo, 1891. Glires, Caviidee. 
Revista Argentina Hist. Nat., [, entr. 4a, 241, Aug. 1, 1891. 
New name for Cardiodon Ameghino, 1885, which is preoccupied by Cardiodon 
Owen, 1841, a genus of Reptilia; and by Cardiodus Bravard, 1857, a genus of 
Caviidze. 
Extinct. 
Eucardiodon: £0, well, typical; +- Cardiodon. 
Eucastor (subgenus of Castor) Lerpy, 1858. Glires, Castoridee. 
Proc. Acad. Nat. Sci. Phila., 1858, 23; Auten, Mon. N. Am. Rodentia, 449-451, 
1877 (raised to generic rank ). 
Type: Castor (Eucastor) tortus Leidy, from the Miocene of the valley of the Nio- 
brara River, Nebraska. 
Extinct. Based on ‘‘the greater part of an upper jaw, consisting of the upper 
maxille and intermaxille containing the greater portion of the incisors, 
together with the anterior three molars of both sides." 
Eucastor: eb, well, typical; + Castor. 
Eucebus (subgenus of Cebus) RErcHENBACH, 1862. Primates, Cebidee. 
Vollstiind. Naturgesch. Affen, 56, pls. vr-vir, figs. —, 1862. 
Species 8, from South America: Cebus fistulator Reichenbach, C. macrocephalus 
Spix, C. robustus Maximilian, C. variegatus Geoffroy, C. monachus Cuvier, C. 
cucullatus Spix, C. griseus Desmarest, and C. crassipes Pucheran. 
Eucebus: £&0, well, typical; + Cebus. 
Eucervaria (subgenus of Lynx) PALwER, 1908. Fer:, Felidee. 
Science, new ser., XVII, 873, May 29, 1903. 
New name for Cervaria Gray, 1867, which is preoccupied by Cervaria Walker, 
1866, a genus of Lepidoptera. 
Eucervaria: &v, well, typical; +- Cervaria. 
Eucervus Gray, 1866. Ungulata, Artiodactyla, Cervide. 
Ann. & Mag. Nat. Hist., 3d ser., X VIII, No. 106, pp. 338-339, Oct., 1866. 
Species: Cervus macrotis Say, from the Canadian River, New Mexico; and Cervus 
columbianus Richardson, from the Columbia River. 
Eucervus: £9, well, typical; + Cervus. 
Eucetites AwxEGnuriNo, 1901. Cete, Baleenidee. 
Anal. Soc. Cien. Argentina, LI, 80, Mar.-Apr., 1901. 
Type: Eucetites juliensis Ameghino (nomen nudum), from the Eocene (Pata- 
gonian formation) of Patagonia. 
Extinct. 
Hucetites: «ros, whale; with termination -ites,* indicative of its fossil character. 


* Compare Ammonites, Belemnites, Ceratites, Goniatites; and in Paleobotany, Cupres- 
: , 3 ? 1 
sites, Pinites, Taxites, Thujites, etc. 
