SINCLAIR: MARSUPIALIA OF THE SANTA CRUZ BEDS. 405 
podial and part of the patella, collected by Mr. Hatcher, from the Lower 
Santa Cruz beds at Killik Aike. 
Although smaller than A. manzciniana , the length of the upper pre- 
molar-molar series is almost the same as in some individuals of that 
species (cf. PI. LIX, figs. 1, 3^). In A. miniita , the nasals are less 
rounded posteriorly than in A . manzciniana and receive a somewhat 
longer tongue of the frontals between them. This, however, may be an 
individual rather than a specific character. In the mandible, the chin is 
more strongly marked than in A. manzaniana . The dental pattern is 
identical in the two species. 
Measurements. 
Skull, length from ant. surface of canine to post, border of preglenoid process. 
.069 
“ least width of brain case ....... 
.010 
“ width across postorbital processes ..... 
.015 
“ width across posterior expansion of nasals. 
.015 
Palate, greatest length from anterior surface of canine to palato-narial border. 
•043 
width between anterior premolars ..... 
.009 
“ “ last molars ...... 
.020 
Mandible, length, base of median incisor to condyle . 
.076 
“ “ Mj to outer end of condyle .... 
.0295 
height of condyle 'above angle ..... 
•0135 
“ depth of horizontal ramus below Mj . 
.0105 
“ “ “ “ posterior premolar . 
.008 
“ “ “ “ anterior premolar 
.0078 
“ transverse diameter of condyle ..... 
.009 
Upper dentition, anterior border of canine to Mj inclusive . 
.044 
length of space occupied by premolars 
.017 
“ “ “ “ “ “ “ molars . 
.020 
Lower “ base of median incisor to Mj inclusive 
• .048 
length of space occupied by premolars 
.017 
“ “ “ “ “ “ “ molars . 
•0233 
Upper canine, antero-posterior diameter at alveolar border . 
.0045 
“ “ transverse “ “ “ “ 
.003 
Anterior superior premolar, antero-posterior diameter 
.004 
“ “ “ transverse “ 
.0018 
Median “ “ antero-posterior “ 
.005 
“ “ “ transverse “ 
.002 
Posterior “ “ antero-posterior “ 
.0053 
“ “ “ transverse "... 
.0025 
MP, antero-posterior diameter ....... 
.0065 
“ transverse “ ...... 
.004 
MP-, antero-posterior “ . . . . . ... 
.0065 
“ transverse “ ....... 
.005 
