1898.] 



MYOLOeT OF THE TEREESTRIAL CABNIVORA. 



173 



Acces'sorlus. — This muscle is usually present in the Oarnivora ; it 

 rises from the under and outer side of the calcaneum and is 

 inserted into the conjoined tendons of the flexores fibularis and 

 tibialis, usually on their plantar surface. In the Felidse it is short 

 and transverse — Felis leo (1, 2), Felis tlgris (4j, Fells pardus (5, 6), 

 Felis pardalis (8), Felis catus (10). In the Viverridae it is also 

 present but is more antero-posterior : in many instances the 

 innermost fibres of the muscle wei-e continued on into the hallux ; 

 this was the case in Gryptoprocta (13, 14), Viverra (16), Genetta 

 (24), Paradoxitrus (25), and Hopestes (29). In Herpestes (30), 

 as we have already mentioned under the head of the flexor fibu- 

 laris, the accessorius formed the M'hole of the only flexor tendon 

 to the hallux (see fig. 4). 



..ADD.HAU. 

 .ABDHAL- 



AOD-MlN.Dia. 



ABD.OS,S.MtT 



Plantar muscles of foot of Procyon. 



Among the Hysenidse the muscle was absent in Hycena striata 

 (33, 36), and also in Proteles (32), but it was found in Hycena 

 crocuta (37). The Canidse are remarkable for the frequency with 

 which this muscle is absent : this was the case in Canis famUiaris 

 (39, 40, 43, 44, 45, 46, 48), Canis aureus (50), Canis mesomelas (51), 

 and Canis lagopus (53). In Canis aureus (50 a) and Lycaon 

 pictus (54) the accessorius was present. In the other families 



