EDENTATA OF THE SANTA CRUZ BEDS. 



61 



MEASUREMENTS. 



Ulna, length 083 



" " of olecranon 034 



" width of distal end oio 



Radius, width of distal end 0175 



Metacarpal I, length 012 



" " width of proximal end. . . .005 



" " " of distal end 0045 



Metacarpal II, length 021 



" " width of proximal end. . . .005 



" " " of distal end 007 



Metacarpal III, length 026 



" " width of proximal end . .008 



" " " of distal end 0085 



Metacarpal IV, length 013 



" " width of proximal end. . .009 



" " " of distal end oio 



Metacarpal V, length 005 



" " width of proximal end .. .005 



" " " of distal end 007 



Proximal phalanx, digit I, length 015 



Proximal phalanx, digit I, width of prox- 

 imal end 004 



Proximal phalanx, digit II, length 014 



Proximal phalanx, digit II, width of prox- 

 imal end 007 



Proximal phalanx, digit III, length 008 



Proximal phalanx, digit III, width of 



proximal end 009 



Proximal phalanx, digit IV, length 0065 



Proximal phalanx, digit IV, width of 



- proximal end 0095 



Proximal phalanx, digit V, length 005 



Proximal phalanx, digit V, width of 

 proximal end 008 



Second phalanx, digit II, length 015 



Second phalanx, digit II, width of 



proximal end 0075 



Second phalanx, digit III, length 009 



Second phalanx, digit III, width of 



proximal end 009 



Second phalanx, digit IV, length 0)085 



Second phalanx, digit IV, width of 



proximal end 009 



Second phalanx, digit V, length 007 



Second phalanx, digit V, width of prox- 

 imal end 007 



Ungual phalanx, digit I, length 014 



Ungual phalanx, digit I, width of prox- 

 imal end 0045 



Ungual phalanx, digit II, length 02 1 



Ungual phalanx, digit II, width of 



proximal end 007 



Ungual phalanx, digit III, length 025 



Ungual phalanx, digit III, width of 



proximal end 0075 



Ungual phalanx, digit IV, length 0235 



Ungual phalanx, digit IV, width of 



proximal end 0075 



Ungual phalanx, digit V, length 018 



Ungual phalanx, digit V, width of 



proximal end 007 



Digit I, length 040 



" II, " 068 



" III, " 063 



" IV, " 049 



" V, " 033 



In the Ameghino collection are the femur, tibia and fibula of this 

 species, associated with the facial region of the skull and the mandible of 

 an individual very slightly smaller than the one above described, the 

 upper dentition measuring 47 mm. and the lower 51 mm. The following 

 measurements are from this specimen. 



MEASUREMENTS. 



Femur, length from head 094 



" " " great trochanter .. .108 



" width of proximal end 035 



" of distal end 023 



Tibia, length 082 



" width of proximal end 032 



" and fibula, width of distal end 026 



