394 DR. B. C. A. WINDLE A.ND MR. T. G. PARSONS ON THE [Apr. 6, 



Laurillard (XIX.). In the Ursidae there are three heads in 

 U. marithnus (45), tour in U. americanvs (49). Among the 

 Procyonidae, Frocyon has already been alluded to. Cercoleptes 

 (Hi) has four heads. The Mustelidfe are remarkable for having 

 au e.\tra head, rising from the angle of the scapula and joining 

 the rest of the muscle in the lower part of the arm, to be 

 inserted into the inner side of the olecranon. This head was 

 noticed in Galictis vittata (63), G. barhara^ (64), Mustela putorivs 

 (65), 21. fo'ma (66), Ictonyx lyhica (70), Meles taxns (72), and 

 Lutra vulgaris (74, 75, 76). The insertion of ttie triceps is into 

 the upper internal and external surfaces of the olecranon process. 



Anconeus. — This muscle is large and triangular and is always 

 closely connected with the lower part of the triceps : its base 

 rises from the back of the external condyle and supracondylar 

 ridge, while the truncated apex is inserted into the outer side of 

 ihe olecranon process. The muscle is evidently present in all the 

 C'arnivora, and only varies in size and in the degree of its fusion 

 virh the triceps. 



Ejntrochleo-anconeus (Anconeus internus). — The epitrochleo- 

 ancoueus is a most constant muscle in Carnivora. It is described 

 by Gruber in a good many animals besides those in our list. It is 

 a round muscle which passes from the back of the internal condyle 

 to the inner side of the olecranon, lying superficial to the ulnar 

 nerve by which it is supplied. 



Pronator radii teres. — This muscle rises from in front of, and 

 just above, the internal coudjde and passes obliquely to the side 

 of the radius farthest from the ulna. There is never any sign of 

 a deep head. The position of the insertion of the muscle seems to 

 be of some interest from a systematic point of view. In the 

 I'elidse it is inserted about the middle of the radius in F. lea (la), 

 F. tiyris (3), and F. catus (6). In Cynct'lurus, Eoss (IV.) describes 

 it as reaching to within 2 inches of the loAver end, and from its 

 insertion a small tendinous prolongation extends to the palmar 

 fascia. In the Yiverridte the insertion is rather variable ; in 

 Cryptoprocta (10), Viverra civetta (12), and Hemiyalea (XL) it goes 

 to the lower half, while in Viverra civetta ( 13), Genetta (17, 18), and 

 Herpestes (24) it goes to the middle. In Froteles (25) it is very small 

 and is inserted about the middle. Among the Hysenidse, Hycena 

 striata (26, 27, 28) and M. crocuta (29) closely resemble Froteles. 

 In the Canidaj the muscle is small and is usually inserted abo\'e 

 the middle of the radius ; this is the case in Cants familiaris (31, 

 39), C. aweus {41)^ and C. vidpes (42), while in Lycaonpictus (44) 

 it goes to the middle. In the Ursid* we have records of three 

 specimens of Vrsus americamts (48, 49, 52) and one of U. arctos (47) ; 

 in all of these the insertion was into the lower end of the radius. 

 Among the Procyonidae it went to the middle of the radius in 

 thi-ee specimens of Frocyon (53, 54, 57), but Meckel describes it 

 as going to the lower end of the bone in that animal (XXXIX.). 



^ Vide description of Dorso-epitrofhlearis on p. 380. 



