74 THE DESEADO FORMATION OF PATAGONIA 
Propachyrucos smithwoodwardi Ameghino 
P. smithwoodwardi, Amegh., 1897, Bol. Inst. Geog. Argen., t. 18, p. 425. 
We did not find this 
species, but I reproduce 
Ameghino’s figure of it, 
natural size. The length 
Fig. 42. P. smithwoodwardi after Ameghino, right of the dentition from inc. 
mandible—natural size. ® . 
I to m. 3.15 41 mm., hewn 
of mandible under m. I is 12 mm. 
Propachyrucos aequilatus Ameghino 
P. aequilatus, Amegh., 1901, Bol. Acad. Nac. Cienc. Cordoba, t. 16, p. 371. 
This species is based on the anterior lobe of each lower 
molar, being longer than the posterior. In size, molars 1 
to 3 measure 24 mm.* 
Phanophilus Ameghino 
Panophilus, Amegh., 1903, Anal. Soc. Cienc., Argen., t. 56, p. 202. 
This genus is based on isolated upper molars, charac- 
terized as similar to Protypotherium, but having a pro- 
nounced median vertical column, instead of a groove on 
the external face of the upper molars, a character unique 
among typotheres. ‘The position of the genus with this 
scant information is uncertain. One species is described, 
P. dorsatus. 
Phanophilus dorsatus Ameghino 
P. dorsatus, Amegh., loc. cit. p. 202. 
In our collection, two isolated upper molars of this un- 
usual form occur, corresponding in size and pattern to the 
one described by Ameghino. The external column, as 
*P. crassus has been described, (loc. cit., p. 425,) based on pm. 2 and 3, of 
larger size than either of the foregoing but I do not think that the genus can 
be determined on so small a fragment. 
