EURYSODON—EUSMILUS. 281 
Eurysodon Mercerat, 1891. Edentata, Megalonychid:e. 
Revista Mus. La Plata, II, 18-23, 1891. 
Euryosodon LYpDEKKER, Zool. Record for 1891, XXVIII, Mamm., 51, 1892 (mis- 
print). 
Species 5, from Patagonia: HLurysodon nasutus Mercerat, from Monte Leon; Hucho- 
leops adteger Ameghino, Eurysodon boulei Mercerat, and E. rostratus Mercerat, 
from the Rio Santa Cruz; and Eucholeops infernalis Ameghino. 
‘Name preoccupied.’ (LvpDpEKKER, Zool. Rec., 1891.) 
Extinct. 
Eurysodon: etpvs, wide; 650v=d60vs, tooth. 
Eurystephanodon Rorn, 1908. Ungulata, Ancylopoda, Omalodawtonheriiles 
Revista Mus. La Plata, XI, 150-152, 1903. 
Species, 3: Eurystephanodon cattanii Roth, E. angusticephalus Roth, and F. cras- 
satus Roth, from the upper ‘Cretaceous’ of Lago Musters, Territory of Chubut, 
Patagonia. 
Extinct. 
Eurystephanodon: £0pvs, broad; 6réiavos, crown; 66@v=66 ovs, tooth— broad- 
crowned tooth.’ 
Eurystomus Horn, 1901. Ungulata, Litopterna, Notohippide. 
Revista Mus. La Plata, X, 256, Oct., 1901 (sep. p. 8). 
Type: Hurystomus stehlini Roth, from the lower Tertiary of Argentina. 
Name preoccupied by Zurystomus Vieillot, 1816, a genus of Birds. Replaced by 
Pleurystomus Ameghino, 1902. 
Extinct. 
Burystomus: evpvérojos, wide-mouthed (from evpvs, wide, broad; 6rdma, 
mouth). 
Eurytherium Gervais, 1850. Ungulata, Artiodactyla, Anoplotheriide. 
Comptes Rendus, Paris, XX XI, No. 16, p. 553, July—Dec., 1850; Zool. et Paléont. 
Frang., 1° éd., II, expl. pl. No. 36, p. 3, 1848-52; 2° éd., 165-169, pl. xxvi, 
figs. 1-7, 1859. 
Type: Eurytherium latipes Gervais, from the lignite of Débruge, near Apt, Vau- 
cluse, southeastern France. 
Extinct. Based on metacarpals and metatarsals. 
Eurytherium: £9pvs, wide; Onptorv, wild beast. 
Euryurus H. Gervais & AmEGHINO, 1880. Edentata, Glyptodontidee. 
Mamm. Foss. l'Amérique du Sud, 184-187, 1880. 
Type: Glyptodon rudis Gervais, from the province of Buenos Aires, Argentina. 
Extinct. Based on some bones of the limbs, a fragment of the carapace, and a 
nearly entire caudal tube. 
Name preoccupied by Euryurus Koch, 1847, a genus of Myriapoda; and by Furyu- 
rus Von der Marck, 1864, a genus of Crustacea. Replaced by Newryurus 
Ameghino, 1889. 
Euryurus: evpvs, broad; ovp, tail—‘‘ pour rappeler que leur principal carac- 
tére distinctif réside dans la forme particulicre de leur région caudale, qui est 
aplatie." 
Euryzygomatomys GoErp:, 1901. Glires, Octodontidee. 
Bol. Museu Paraense, III, No. 2, p. 179, Aug., 1901. 
Type: Echimys spinosus Desmarest, from the vicinity of Atira, Paraguay. 
Euryzygomatomys: ebpvs, wide; Cvy oua, Cvy óuaros, zygoma; “0s, mouse—in 
allusion to the broad zygoma. 
Eusmilus Gervais, 1876. Ferr, Felidee. 
Zool. et Paléont. Gén., 2° sér., 3° livr., 53-54, pl. xm, figs. 8-12, 1876. 
Type: Machairodus perurmatus Gervais (= M. bidentatus Filhol?), from the Phos- 
phorites of Quercy, France. 
Extinct. 
