104 
7 
Fig. 9. 1. Felis par dus. Fig. 10. Machærodus neogæus. p 4 
2. F. leo . p 4 from above. 1 h. (from above and from the outer side). bi. 
equals 5 and 3, whereas 1 resembles a little wart. — In all the 
genera mentioned, cusp 6 rises some distance behind the anterior 
end of the tooth and is connected by a more or less obvious list 
or ridge with 4; this list may individuallv become divided into one 
or more cusplets. The same is the case with Canis (diagr. 11), 
but here 4 is quite small and 1 has 
totally disappeared, consequently 6 is 
placed just inside the front border of 
the tooth. — Characteristic for p 4 is 
thus the rudimentary condition of 1 and 
the often strong development of 4 — just 
the reverse condition of that found in 
dp 3 — ; consequently 6 appears as it 
were displaced against the front end of 
the tooth. 
In Procyonidæ (together with Melini, 
cfr. Winge: Jordfundne og nulevende Rovdyr, E Mus. Lundii II 2, 
1896) p 4 acquires one element more, a cusp 7 arising behind 6, 
but being supported by the same root. (fig. 12, diagr. 13). The 
successive evolutional stages are clearly shown in the series Bassaris - 
Procyon-Ælurus. It corresponds to Osborn’s hypocone and gives 
the tooth a bunodont character. — In the strange genus Æluropus 
