15S 
ANNALS NEW YORK ACADEMY OF SCIENCES 
Insectivora. 
Necrolestes (Chrysochloridae). 
Rodentia. 
Steiromys, Acaremys, Sciamys, Neoreomys, Spaniomys, Perimys, Eo- 
cardia (all extinct genera, but quite closely related to modern South 
American Hystricomorpha. 
Edentata. 
Ilapalops, Schismotherium, Planops, Analcitherium etc. (Gravigrada). 
Propaloeohoplophorus, Cochlops, Eucinepeltus (Glyptodontia). 
Prozaedyus, Proeutatus, Stegotherium, Peltephilus (Dasypoda). 
Homalodotheria. 
t Homalodotherium. 
Astrapotheria. 
Astrapotherium. 
Toxodontia (including Typotheria). 
Nesodon, Adinotherium (Toxodonts). 
Protypotherium, ELegetotherium, Interatherium (Typotheres). 
Litoptema. 
P voter other mm, Diadiaphorus, Thoatherium (Proterotheriidae). 
Theosodon (Macraucheniidae). 
IV. Pampean Faunae. 
A. Lower Pampean. 
The Lower Pampean of Roth includes, broadly, the 1) Entrerian, 2) 
Rio Negrean, 3) Araucanian and 4) Hermosan faunae of Ameghino. 
These appear to be in the main the Pampean fauna with successively 
decreasing proportion of surviving Santa Cruz genera, and with a very 
scanty number of northern genera, which are related to the Tertiary rather 
than to the Quaternary faunae of North America. Among the Carnivora 
may be noted 
Procyonidse. 
Amphinasua, Pachynasua, Cyonasua (cf. Leptarctus). 
Ursidae. 
Pararctotherium. 
Canidae. 
Amphicyon (generic reference questionable). 
Ameghino reports Hyaenodontidae, but the specimens figured appear 
to be carnivorous marsupials, not Creodonts. 
The Rodents are all Hystricomorphs except Argyrolagus, which is per¬ 
haps an abnormal type of Lepus. 
