ASMODEUS OSBORNI 135 
Asmodeus osborni Ameghino 
A. osborni Amegh., 1895, Bol. Inst. Geog. Argen., t. 15, p. 644. 
A. osborni Amegh., 1897, Bol. Inst. Geog. Argen., t. 18, p. 478. 
Homalodontotherium osborni Gaudry, 1906, Anal. Palaeontologie, t. 1, p. 11. 
The type of this species is a calcaneum and astragulus, 
to which Ameghino later assigned the rear part of a mandi- 
ble with pm. 4 and the three molars; also a milk dentition, 
this last I think wrongly, for it is too small. I should 
interpret this specimen as deciduous inc. 2 to deciduous 
pm. 4, plus permanent molar 1, in which case the permanent 
molar corresponds to that of A. scott and it is not necessary 
to discuss ‘the remarkable bicuspid canine,’ as Ameghino 
Fig. 92. Molars 1-3 of the left side—1/2 natural size. 
does. Gaudry had some of this material, upper molars, 
the lower end of the humerus, the ulna, caleaneum and 
astragulus, and he referred the genus as the same as 
Homoladontotherium. \Vith this last, I can not agree. 
We found the three upper molars, the lower end of the 
humerus, part of the radius, the tibia, and two phalanges, 
all on the Chico del Chubut, west of Puerto Visser. 
While brachydont, the external faces of the molars are 
high, and each has a tiny cingulum along the base of the 
crown. There is also a strong cingulum around the 
anterior, internal, and posterior faces of the crown, which 
on the posterior margin flares out, making a marked and 
characteristic ridge. The grinding surface, with its ex- 
ternal wall and two transverse lobes, is very similar to the 
molar of a rhinoceros. When the tooth wears down, the 
