
: No. 427.] ABNORMALITY IN CATS’ PAWS. 517 
The fact that in the polydactyle paw the union between the 
tendons to the digits marked /V and V (Fig. 4) extends fur- 
ther distally than in the normal paw (Fig. 3) is apparently 
less important than the fact that in the polydactyle paw the 
radial part of the muscle has five tendons while the normal 
paw has only four. 
Muscle flexor profundus digitorum (Figs. 9, 10, fix. profnd.dg.) 
has in the normal paw five, and in the hexadactyle paw six, 

£ 1 2 E : A +i f deen muscles 
P 

Fic. 9. — Palmar aspect of left 
Fic. 10.— Palmar aspect of left manus of polydactyle cat, showing mus g. 9 
A, radial digit of polydactyle manus; 7, that of normal manus; posuer dg., flexor 
profundus digitorum; Zrsór.1-4, uet Pa 1-4. 
tendons distributed one to each digit. There is no evidence 
here as to which digit is the extra one. 
Muscle flexor carpi ulnaris is inserted on the pisiform bone 
in both normal and polydactyle paws. 
There are four /umbricales in both normal and polydactyle 
paws (Figs. 9, 10, Zór. 7-4). In both cases these are inserted 
one each on the radial side of the proximal phalanx of each 
of the four external digits. In the polydactyle paw there is 
no lumbrical superficial to the radial border of the distal part 
of the flexor profundus digitorum. 
