1897.] MYOLOGY OF THE TE11H.ESTRIA.L CABXIVOBA. 397 



is usually absent altogether. In the Ursidae it is often so. In the 

 Procyouidse both p. 1. externus and interuus are usually present. 



Flexor sublimis dhjitorum. — In looking through the literature 

 of carnivorous myology one finds this muscle sometimes described 

 as rising from the iuternal condyle and giving slips to the flexor 

 profundus, at other times as coming off from the surface of the 

 proPundus itself. The method of description seems to depend 

 chiefly on whether the flexor sublimis exceeds in size the condylar 

 origins nf the profundus or vice versa. The description which 

 seems to us most applicable to the whole order is that the sublimis 

 rises in common with the condylo-ulnaris head of the profundus 

 from the iuternal condyle. The insertion is, as usual, into the 

 middle phalanges of a variable number of digits; before its 

 attachment a loop passes round the subjacent profundus tendon in 

 exactly the same way that has been already noticed in Eodents 

 (XLI. p. 266); the sublimis tendon then splits and allows the 

 profundus to pass through it. The number of digits into which 

 the tendons of the sublimis are inserted varies a good deal, and 

 seems to bear no relation to the position of the animals in the 

 order. By far the commonest arrangement is to find the tendons 

 inserted into the second, third, and fourth digits ; tiiis occurs in the 

 following animals : — Viverracivetta (12), Cri/ptoprocta (11), Genelta 

 (17), Herpestes (24), Proteles (25), Hycena striata (27), M. crocata 

 (29), Canis familiaris (39), Procyon loior (.53, 55), P. cancrivorus 

 (57), Nasua\QO), Cercoleptes (61), Mustda j)utorius (65), M.foina 

 (66), Ictonyx zorilla (69), /. libyca (70), and Lutra cinerea (78). 

 In the following animals tendons go to the first, second, third, and 

 fourth digits, the pollex being counted as the first; Ursus 

 americanus (48), Procyon later (54), and A'''ism( (58). In Ursun 

 americanus (49) and Felis catus (6) slips are given to all five digits. 

 In Lutra (76), Genetta (16), and Canis (31) there were tendons to 

 all the digits except the thumb. In Cryptoprocta (10), Ursus 

 maritimus (45), Meles (72), and Lutra (74) the muscle only gave 

 off two tendons to the third and fourth digits respectively. In 

 Bycena striata (26) tendons passed to the third, fourth, and fifth 



digits. 



Flexor carpn ulnaris. — This muscle consists of two parts, 

 condylo-pisiform and olecrano-pisiform, the former rising from the 

 internal condyle, the latter from the olecranon process. In certain 

 cases these two heads are quite distinct from their origin to their 

 insertion, but more usually they unite in the forearm, leaving a gap 

 for the ulnar nerve to pass between them as in Man. Laurillard 

 (XXII.) has suggested that possibly the double arrangement is 

 characteristic of young animals, the single of older ones, but we 

 have not come across any facts which bear out this theory. 

 Among the Telidse the two parts join in the upper part of the 

 forearm in Felis catus (6), while in F. leo (1) (at. S years) and 

 F. tigris (3) they unite in the lower quarter. In the Viverrida) 

 the two parts remained distinct until their insertion in Macalisfer's 

 and Devis's specimens of Viverra civdta (13, 14), in Cryjitopi octa 



