103 
affirming its nature as the true 4 (fig. 4 and 5). In Canis (fig. 6 
and diagr. 7) it also occupies the last mentioned place, but is much 
smaller than 1 and distinctly separated from it, whereas it nearly 
has coalesced with 5. This condition is still more advanced in 
Fig. 5. Hyæna crocuta. Fig. 6. Canis vulpes. 
dp? (from above and om the dp? (from above and from the 
outer side). 14. inner side). 5/» and "1. 
Bassaris (fig. 7) where 4 has nearly lost its individuality, though 
1 is still large. — 6 being connected with 4, not with 1, it is 
evident that 1 being large and 4 small the anterior part of the tooth 
must reach some distance in front of 6, so that the heel is found 
in its characteristic place. — Characteristic of dp? is the relatively 
large 1 and the rudimentary, sometimes vanishing 4. 
Fig. 7. Bassaris astuta. Fig. 8. Genetta tigrina. 
dp? (from above and from the p? (from above and from the 
outer side). %/; and 1/4. outer side). 3/2 and "11. 
pt of a Viverroid e. g. Genetta (fig. 8, diagr. 8), differs from 
dp? in cusp 1 being as it were pushed into the anterior outer 
Corner, whereas 4 has increased; 5, 6 and 3 are also relatively 
stronger than in dp+. In Felis (fig. 9, diagr. 9) cusp 4 has grown 
into a very important cusp, sometimes with a rudimentary cingulum- 
like shelf on its anterior border, evidently the remnants of 1. In 
Machærodus (fig. 10) 1 is a little more distinet, but very insignificant. 
In Hyæna (especially H. striata fig. 11, diagr. 10) 4 nearly 
