EDENTATA OF THE SANTA CRUZ BEDS. 



137 



Rostrum, width at anterior end 

 Mandible, depth below 3 



Cervical mass, length 



Axis, breadth of anterior face 



Sixth cervical, length of centrum 



" " width of centrum 



Cervico-thoracic mass, length 

 Seventh cervical, width of anterior face. 

 Second thoracic, width of posterior face. 

 Last sacral, width across transverse proc- 



esses 

 Humerus, length 



" width of proximal end 



" over epicondyles 

 Radius, length 



width of proximal end 



" " distal end 

 Ulna, length 



" ofolecranon ...... 



" width at sigmoid notch 



" of distal end 

 Carpus, breadth 

 Pelvis, length 

 Ilium, length 

 Ischium, length 

 Femur, length from head 



" " " great trochanter. . . 



width of proximal end 



035 

 029 

 031 

 034 

 046 

 006 

 048 

 026 

 .044 

 .036 



164 



162 

 034 

 050 

 088 

 0235 

 026 

 128 

 043 

 026 

 020 

 038 

 272 

 135 

 137 

 198 

 .222 

 073 



Femur, width of distal end 054 



Tibia, length 130 



" width of proximal end 052 



" " distal end 031 



Fibula, length 1 28 



" thickness of proximal end 032 



" distal end 023 



Calcaneum, length 05 1 



" of tuber 030 



" width of proximal end 022 



" " distal end 017 



Astragalus, length 030 



" width of trochlea 027 



" distal end 017 



Metatarsal I, length 012 



" " width of proximal end . . .008 



" " " distal end 008 



Metatarsal II, length 023 



" " width of proximal end .. .013 



" " distal end 012 



Metatarsal III, length 028 



" width of proximal end .0165 



" " distal end 013 



Metatarsal IV, length 024 



" " width of proximal end . .oil 



" " distal end 0135 



Metatarsal V, length 0135 



" " width of proximal end. . .0195 



" " " distal end.. .on 



PROPAL^OHOPLOPHORUS MINOR Ameghino. 



(Plates XVII, XXIV, Fig. 14; XXV, Figs. 2-4; XXVI, Fig. i ; XXVII.) 



Propalfsohoplophorus minus Amegh. : Rev. Argent, de Hist. Nat., T. I, 

 1891, p. 326. 



The type of this species is a lower jaw and Ameghino's original descrip- 

 tion of it as follows: "Size distinctly smaller than P. incisivus ; sym- 

 physeal region narrower and more prolonged ; molars more compressed 

 and of more slender shape ; length of the eight lower teeth, 89 mm. ; 

 height of the horizontal ramus below the fourth tooth, 30 mm. ; below the 

 hinder part of the sixth, 41 mm." (loc. cit.]. 



To this species I refer the beautiful specimen, No. 9197, collected by 

 Mr. Barnum Brown for the American Museum of Natural History. The 



