262 INDEX GENERUM MAMMALIUM. 
Eobasileus Corr, 1872. Ungulata, Amblypoda, Uintatheriidee. 
Paleeont. Bull. No. 6, pp. 2-3, Aug. 20, 1872; Proc. Am. Philos. Soc., XII, for July- 
Dec., 1872, 485, Jan. 1873; XIII, 54, 1873; MansH, Mon. Dinocerata, 206-208, 
figs. 180-181, 1886. 
Type: Hobasileus cornutus Cope, from the Eocene of Haystack Mountain, near the 
headwaters of Bitter Creek, Sweetwater County, Wyoming. 
Extinct. Based on the ‘‘remains of five individuals.”’ 
Eobasileus: 7s, dawn; fjeGiAevc,. king—‘ Eocene king,’ from its large size, 
second only to that of Loxolophodon cornutus. 
Eocardia AMEGHINO, 1887. Glires, Eocardide. 
Observ. Gen. sobre Mamif. Estinguidos llamados Toxodontes, 65-66, May, 1887. 
Type: Locardia montana Ameghino, from the Oligocene (?) of the upper Rio 
Santa Cruz, southern Patagonia. 
Extinct. Based on a single upper molar. 
Eocardia: 7s, dawn; Kapdie, heart—in allusion to the prisms of the upper 
molars: ** Muelas superiores compuestas de dos prismas triangulares . . . sepa- 
rados por un surco profundo en el lado esterno, y otro poco marcado en el 
interno." (AMEGHINO.) 
Eochalicotherium Amecuino, 1901. Ungulata, Ancylopoda, Isotemnid:e. 
Bol. Acad. Nac. Cien., Córdoba, XVI, 417-418, July, 1901 (sep. pp. 71-72). 
Species, 4: Mochalicotherium cretaceum Ameghino, FE. crassidens Ameghino, FE. robus- 
tum Ameghino, and E. minutum Ameghino, from the ‘Cretaceous’ of Patagonia. 
Extinct. 
Eochalicotherium: nes, dawn; -}- Chalicotherium—À. e., a primitive Chalicotherium. 
Eoctodon AwraGniNo, 1902. Glires, Octodontidee. 
Bol. Acad. Nac. Cien. Córdoba, XVII, 115, May, 1902 (sep. p. 47). 
Type: Hoctodon securiclatus Ameghino, from the Colpodon beds of Patagonia. 
Extinct. 
Eoctodon: nes, dawn; + Octodon—i. e., an Eocene Octodon. 
Eodasypus Amrcuino, 1894. Edentata, Dasypodide. 
Enum. Syn. Mamm. Foss. Form. Éocénes de Patagonie, 173, Feb., 1894. 
Species: Praeuphractus nanus Ameghino, and P. limus Ameghino, from the Eocene 
of Patagonia. 
Extinct. 
Eodasypus: ns, dawn; +- Dasypus—i. e., an Eocene Dasypus. 
Eodidelphys AwraniwNo, 1891. Marsupialia, Microbiotheridee. 
Nuevos Restos Mamif. Fós. Patagonia Austral, 24, Aug., 1891; Revista Argen- 
tina Hist. Nat., I, entr. 5a, 310, Oct. 1, 1891. 
Species: Modidelphys fortis Ameghino, and E. famula Ameghino, from the Lower 
Eocene of southern Patagonia. 
Extinct. 
Eodidelphys: 7s, dawn; + Didelphys—i. e., an Eocene Didelphys. 
Eodiprotodon AmeEGHINo, 1890. Marsupialia, 9 
Bol. Inst. Geog. Argentino, XI, 185, 186, July-Sept., 1890. 
Type not mentioned. Name provisionally proposed for a hypothetical genus, 
the supposed ancestor of Tritomodon and Phascolomys. 
FEodiprotodon: 1c, dawn; + Diprotodon—i. e., a primitive Diprotodon. 
Eohegetotherium AwEaGniNo, 1901. Ungulata, Typotheria, Hegetotheride. 
Bol. Acad. Nac. Cien., Córdoba, XVI, 370, July, 1901 (sep. p. 24). 
Type: Lohegetotherium priscum Ameghino, from the ‘Cretaceous’ of Patagonia. 
Extinct. 
Hohegetotherium: Hes, dawn; -+- Hegetotherium—i. e., a primitive Hegetotherium. 
