398 BR. B. C. A. WINDLE AND ME. F. G. PARSONS 0>' THE [Apr. 6, 



(10), and Genetta (17), but they fused high up in the forearm in 

 Viverra civetta (12), in Genetta (18), Herpestes (24), and Proteles 

 (2.5). Among the HvaenidiB the head from the olecranon was 

 absent in H. striata (27) and H.crocuta (29), but in H. striata (26) 

 both heads were present and joined high up. Among the Canidae 

 we have records of the dissection of this muscle in six specimens 

 of G. familiaris (31, 32, 34, 36, 37, 39), in one of G. aureus (41), 

 in G. lafjopiis (42), and in Lnjcaon pyictus (44). lu all these nine 

 animals the two parts were distinct. Among the Ursidae we 

 unfortunately have records of only two specimens (49, 52), but in 

 both of these the muscle was double. In the Procyouidae the two 

 heads are distinct in Procyon lotor according to Allen (54), but 

 united in our experience (53). In JS'as^ia (6(1) and Gercolepies (61) 

 they are fused. Among the Mustelida; the two parts unite high up 

 in Mvsfela putorius (65) and Ictonyx (70). In Lutra vvlcjaris (76) 

 they join about the middle of the forearm, while in L. cinerea (78) 

 and Mi-lcs (71. 72) they remain distinct. The insertion of both 

 parts is usually into the pisiform bone, but in H. striata (26) 

 expansions are continued to the four metacarpals, while in Testut's 

 specimen of Ursus americamis (50) the tendon passed the pisiform 

 and was inserted into the fifth metacarpal. Both bellies of the 

 flexor carpi ulnaris are supplied by the ulnar Jierve. 



Flexor profnnchis cligitoncni. — In a former jiaper (XLV.) one 

 of the authors has described this muscle as consisting of five 

 primary parts, condylo-radialis, condylo-ulnaris, centralis, radialis, 

 and ulnaris ; so that when the typical arrangement is present 

 there are three origins from the internal condyle as well as one 

 eaeli from the radius and ulna. It is diflicidt to be quite sure in 

 all cases which of these parts were really present, since different 

 authors have ado])ted different methods of description, but in most 

 instances tlie arrangement is evident enough. Among the Pelidaj 

 all the heads are present in F. catus (6, XLV.). In the Viverridae 

 all five origins are present in Gryptop)rocta (10), Genetta (16, 16 «, 

 18), Paradoxtirt's (19, 20), Viverricula malaicmsis (15), and Cynictis 

 penicilhitn (XLA".), while in Herpestes nepaJenxis (23), B. e/riseus 

 (24), and Viverra civetta (13) the centralis was absent. In all 

 these animals there is a slip to the pollex as well as to the other 

 four digits. In the Hyaeuidae it is not possible to say which 

 elements of the muscle were present. In //ya-na striata (26) Young 

 found no slip to the pollex, though Meckel describes a small one 

 in his specimen of the same animal (27) : in H. cronda (29) the 

 pollex slip was also absent. It is interesting to notice that, so far 

 as the pollex tendon goes, Proteles (25) agrees with the Viverridae 

 rather than with the Hyaenidae. Among the Canidae, Windle found 

 all the heads present and distinct in the dog (XLV.). In Cuvier 

 and Laurillard's dog (39) the centralis is apparently wanting. In 

 another dog which we dissected (31) the condylar heads were 

 fused into one broad origin from the internal condyle, though we 

 are inclined to think that the centrahs was not combined with 



