1898.] MYOLOGY OP THE TEERESTRIAL CARNITORA. 167 



Extensor hrevis digitorum. — This muscle rises from the anterior 

 part of the dorsal surface of the calcaneum and divides into teudons 

 which join those of the extensor longus. As a rule tendons pass 

 to the four inner toes, but occasionally a slender slip runs to the 

 hfth also. In the Felidse, where the hnllux is aborted, there are 

 only three tendons for the 2nd, 3rd, and 4th toes ; this is the case in 

 Felis leo (1, 2), F. tigris (4), and F. catus (9). Among the Viverridie, 

 tendons are given off to the four inner toes in Cnjptoprocta (13), 

 Viverra (16), and Genetta (22, 23, 24). The specimen of Herpestes 

 griseus (30) which we dissected was remarkable for having slips 

 of the extensor brevis to all five toes (see fig. 3). Proteles (32), 

 on the other hand, has only tendons to the second and third toes. 

 Among the Hyaenidae there are always tendons to the 2nd, 3rd, 

 and 4th toes (33, 34, 35, 36, 37), and, in addition, a feeble slip 

 went to the fifth in two specimens of Hycena striata (33, 36). 

 The Cauidae resemble the Hysenidto in the absence of the hallux ; 

 consequently we find tendons running to the 2nd, 3rd, and 4th 

 toes in Ganis familiaris (48), O. aureus (50 a), and C. mesomelas 

 (51). In one Dog (39) a small slip went to the fifth toe in 

 addition. 



The TJrsidae and Procyonidse have tendons to the 1st, 2nd, 3rd, 

 and 4th toes : this is the case in Urstis arctos (57), U. americanus 

 (59, 62), Procyon lotor (63), P. cancrivoriis (67), Nasiia (70, 71), 

 and Cercoleptes (72, 73, 74). In Ursus maritimvs (55) and one 

 specimen of Procyon lotor (64) the tendon to the hallux was 

 absent. The Mustelidae resemble the Ursidse and Procyonidse in 

 usually having tendons for the 1st, 2nd, 3rd, and 4th toes : these 

 were present in Galiciis viitata (75), Mustela piitorius (77), M. foina 

 (78), Meles (86), and Lutra (93). In Ictonyx lihyca (84) and 

 Lutra (88) the slip to the hallux was absent. 



Peroneus longus.- — This muscle rises from the head and upper 

 part of the shaft of the fibula, occasionally encroaching on the 

 adjacent portion of the tibia. Some of the fibres of the external 

 lateral ligament of the knee are continuous with its origin. The 

 tendon of insertion runs in a separate groove on the outer side of 

 the external malleolus, turns round the cuboid, and passes across 

 the sole of the foot to be inserted into the base of the first or, when 

 that is absent, the second metatarsal bone. With regard to the 

 origin, Ruge (XLVIII.) states that in Hycena, JVasua, and Meles it 

 comes from the external condyle of the femur. We have failed to 

 find any confirmation of this by other authors, and in our own 

 specimen of Hycena (36) the muscle certainly rose from the fibula. 

 As the tendon passes round the cuboid, a slip is sometimes given to 

 the base of the 5th metatarsal bone : this was noticed by Young 

 and Macalister in Viverra (16, 17), and by Mivart in Genettcc (20). 

 In our own specimen of Genetta (23) we paid special attention to 

 this point, and satisfied ourselves that the apparent attachment to 

 the base of the fifth metatarsal belonged to the sheath of the tendon, 

 and not to the tendon itself. In Proteles (32) and Hycena crocuta 

 (37), Watson found the tendon ending in the base of the fifth 



