1903] Brown, A New Fossil Edentate from Patagonia. 457 



with a large foramen opposite the posterior of M*. This fora- 

 men leads into a deep canal, extending forward nearly to the 

 premaxillary. The palate is straighter than in Propalceohoplo- 

 phorus australis, and forms with the superior line of the skull 

 a more acute angle than in the last named genus. 



Measurements. 



Cephalic shield : length in median line 130 mm. 



" " greatest width 133 



Teeth. 



M^ Length 8 mm. width 4 mm. 



M2 " 9 



M^ " 12 



M'* " 13 



M^ " 15 



M« " 15 



M' " 14.4 



M« " 14 



5 

 6.6 



7 



7 



7.8 

 7.8 

 7.8 



Upper dental series, length log mm. 



Skull, extrem.e length 176 



" length of median basal line 156 



" " occ. condyle to anterior end of premaxillary. . . 175 



Cranium, length to anterior rim of orbit 125 



" width behind zygomatic arches 102 



Skull , maximum width over zygomatic arches 135 



Occiput, height vertically 48 



width 89 



Zygoma, extreme length inside 77 



" maximum vertical diameter 28 



" length of descending process 45 



" breadth " " 20.5 



Palate, length in median line 117 



width at M » 14 



" at M « 25 



Rostrum, length 4.3 



" width at base 63 



" "at anterior end 41 



Cranium, width at postorbital constriction 49 



Face, length 53 



Forehead, width across postorbital process 91 



