686 The American Naturalist. [August, 
represented it as a long-legged and long-necked mammal, fur- 
nished with the short proboscis of a tapir.? Within a few years 
good specimens of the fore feet were received in Paris, and 
Messrs. Scott and Osborn have given us a figure of that member, 
which, with what was known before of the hind foot, enables us 
to place the genus finally in the system. The carpus and tarsus 
are both taxeopodous, or with the bones of the two rows in con- 
tinuous lines and not alternating.» So this genus is a taxeopod, 
and cannot enter the Perissodactyla, which is diplarthrous. 
‘The lamented French paleontologist, Bravard, who perished in 
the earthquake at Mendoza, thought he had discovered in Argen- 
tina species of the European genera Paleotherium and Anoplo- 
therium, which were found by Cuvier in the Eocene deposits 
near the city of Paris. The discovery of these genera in this 
region was unlooked for, and its announcement excited much 
curiosity, if not credence. 
In 1873 Prof. W. H. Flower described and figured in the Philo- . 
sophical Transactions of London (p. 173) the dentition of a 
new mammal, under the name of Homalodontotherium cunning- 
hamii. He regarded it as allied to Rhinoceros on the one hand 
and Macrauchenia on the other (Fig. 4). 
Some years after this Burmeister announced the finding by 
Moreno of the skull of a large mammal in the Eocene beds of 
Patagonia, of remarkable character. It was represented as hav- 
ing large and formidable canine teeth and a very short series of 
molars, but of its affinities no definite idea was expressed. It 
was named Astrapotherium patagonicum. : 
In the great work on the “ Extinct Mammalia of Argentina,” 
recently issued by Ameghino, which is reviewed in the present 
number of the NATURALIST, the characters of these forms are 
much more completely described than previously, and the rela- 
tions of several of them have been clearly pointed out. ~Informa- 
tion is furnished which enables us to estimate the position of 
them with certainty. In the year in which this volume was 
issued the present writer published in the NATURALIST a “ Syn- 
2 Annal. del Mus. Pub. de Buenos Ayres, T. I., p. 32, Pl. 1-1V.; p. 252, Pl. XIII. 
3 Transactions of the Amer. Philos. Soc., 1889, Vol. XVI., p. 540. 


