EURYGENIOPS [07 
Eurygeniops Ameghino 
Eurygenium Amegh., 1895, Bol. Inst. Geog. Argen., t. 15, p. 655. 
Eurygeniops Amegh., 1897, Bol. Inst. Geog. Argen., t. 18, p. 464. 
The name first given this genus was found to be preoc- 
cupied, and therefore changed. It is a clear cut genus, 
differing from the others in the family in the expansion of 
the front of the muzzle, and by the heavy broad character 
of the skull. 
Eurygeniops latirostris Ameghino 
E. latirostris Amegh., loc. cited above. 
This is the type species and is based on a muzzle which 
has never been figured, but which I figure, the drawing 
being made from a photograph taken by Professor Scott 
and kindly furnished me. The characters of the species 
are those of the genus, with the following measurements 
for specific determination, quoted from Ameghino: 
Palate, length 130 mm. 
Palate, width between incisors 3 41 mm. 
Palate, width between premolars 2 33 mm. 
Palate, width between molars 3 56 mm. 
Upper dentition, length from pm. R. to m. 3 82 mm. 
Upper premolar 4, length Il mm. 
Upper premolar 4, width 19 mm. 
Eurygeniops normalis Ameghino 
E. normalis Amegh., 1897, Bol. Inst. Geog. Argen., t. 18, p. 466. 
This second species is described as being much smaller 
than the preceding, the length from pm. 4 to molar 3 being 
65 mm. 
