424 
PATAGONIAN EXPEDITIONS PALAEONTOLOGY. 
Garzonia patagonica (Ameghino). 
(Plate LXIII, Figs. 8, 8a, 10-13.) 
Phonocdromus patagonicus Amegh.; Enum. Syn., etc., p. 100, 1894; Bol. 
Ac. Cordoba, pp. 355-356, 1894; Segundo Censo, etc., p. 186, 1898. 
The left half of a lower jaw (No. 15,238) associated with the glenoid 
portion of the right scapula, the greater part of both humeri and the left 
radius and ulna, collected by Mr. Peterson from the Lower Santa Cruz 
beds, five miles south of Coy Inlet, is referred provisionally to this species. 
The correctness of the identification depends principally on the measure- 
ments, which agree fairly well with those given by Ameghino (1894, p. 
100) for Garzonia patagonica. This species differs from G. typica and G. 
minuta in the less elevated condition of the posterior inferior premolar, 
and from G. captiva in size. 
Measurements. 
Length of mandible from posterior border of median incisor alveolus to condyle 
“ “ lower dentition exclusive of median incisor. .... 
“ “ space occupied by antemolars exclusive of median incisor . 
“ “ “ “ “ molars ........ 
Median incisor, transverse diameter at base ...... 
“ “ depth at base ......... 
Posterior premolar, antero-posterior diameter at alveolar border . 
“ “ transverse “ ...... 
My, antero-posterior diameter ......... 
" transverse 
My, antero-posterior 
“ transverse “ ........ 
My, antero-posterior 
“ transverse “ ........ 
Depth of mandible below My . 
“ “ “ at constriction posterior to My . . . . . 
Humerus, length (approximate) ........ 
Radius, length, exclusive of distal epiphysis ...... 
“ width of head .......... 
“ “ “ distal end ......... 
Ulna, length, exclusive of distal epiphysis ....... 
“ greatest width above sigmoid cavity ....... 
.0195 
.0105 
.0055 
.005 
.0008 
.0012 
.0014 
.0005 
.002 
.001 1 
.0018 
.0011 
.0013 
.001 
.0028 
.0023 
.014 
.014 
.0015 
.002 
.0175 
.0028 
