Pseudhipp., Stilhipp., Perhippidion, Argyrohipp., Notohipp., Merychipp. 637 
1219. f Pseudhippus, Amegh., 1902. 
Ameghino, Bol. Acad. Cordoba, 1902, p. 85. 
6694. ftournoueri, Amegh.. 1. c., 1902, p. 85. f Eocaen. infer. 
Patagonia. 
1220. f Stilhippus, Amegh., 1904. 
Ameghino, Anal. Mus. B.-Aires, 1904, p. 42. 
6695. f deterioratus, Amegh., 1. c., 1904, p. 42, fEoeaen. infer, 
f. 29, 163, 348. Patagonia. 
1221. f Perhippidion, Amegh., 1904. 
Ameghino, Anal. Mus. B.-Aires, 1904, p. 186. 
6696. f tetragonoTdes. Amegh., 1. c., 1904, p. 186, fEoeaen. infer, 
f. 245, 343. Patagonia. 
1222. f Argyrohippus, Amegh., 
Nannodus, p., Amegh., 1891. 
Ameghino, Bol. Acad. Cord., 1902, 
6697. f boulei, Amegh., 1. c., 1902, p. 83. 
cocaenus, p., Amegh. — (4516 part.'). 
6698. f fraterculus, Amegh., 1. e., 1902, p. 84; 
id., Anal. Mus. B.-Aires, 1904, p. 51, f. 49, 
244, 296, 321, 342, 367. 
1902. 
p. 81. 
fEoeaen. infer. 
Patagonia. 
fEoeaen. infer. 
Patagonia. 
1223. f Notohippus, Amegh., 1891. 
Entocasmus et Nannodus, p., Amegh., 1891. 
Ameghino, Rev. Argent., 1891, p. 135. 
6699. f toxodontoYdes, Amegh. — (4517)-, id., fEoeaen. infer. 
1. c., 1902, p. 82 et nota. Patagonia. 
cocaenus (Nannodus), p., Amegh., 1891. 
heterogenidens (Entocasmus), Amegh., 
1891. 
Familia II. Equi da e. 
1224. f Merychippus, Leidy, 1857. 
Protohippus, Leidy, 1858, et Auct., Trt., 1898; Paraldppus et 
Hypohippus, Leidy, 1869. 
Leidy, Proc. Acad. Philad. (1856), 1857, p. 311. 
6700. f insignis, Leidy, 1. c., 1857, p. 311 ( 4875 f Miocaen. Sup. 
syn.); Osboru, Mem. Amer. Mus., 1898, Dakota, Kansas, 
p. 107. f. 20. Oregon, Mexieo. 
medius et insignis, Cope, 1892. 
medius, Matthew, 1899. * 
