1868.] Mr. J. Wood on Variations in Human Myology. 497 



15. Brachialis anticus. — In both arms of the male (No. 6) some of the 

 fibres of this muscle were directly continuous with those of the supinator 

 longus, an ape-Uke arrangement before noticed by the author in his paper 

 of 1866. He has found it in 6 males on both sides out of 102 subjects. 

 It is recorded also by MacaUster {pp. cit. p. 19). Slips from this muscle 

 to the outer part of the fascia of the forearm have been mentioned by Scem- 

 merring, Theile, Macwhinnie, and Hyrtl. In the female (No. 22) the bra- 

 chialis anticus was divided into two muscles, an outer and an inner, 

 both inserted into the coronoid process. This has been observed by 

 the older anatomists. It resembles the arrangement in the Rabbit and 

 Agouti. 



16. Anconeus epitrochlearis. — In his paper read before the Royal Society 

 in June 1866, the author mentioned and tabulated a detached muscular slip 

 in the right elbow of a male subject, arising separately from the back part 

 of the inner condyle of the humerus, and passing across and superficial to the 

 ulnarnerve, and distinct both from the triceps and flexor carpi ulnaris muscles, 

 to be inserted into the inner side of the olecranon process of the ulna. 

 This muscle he again described and figured in his paper of last year, com- 

 paring it with a like muscle he had found in the Rabbit. During the last 

 session this muscle has been found in 4 male subjects out of the 36- — in 3 

 in both arms, and in 1 in the left arm only. The author has also found the 

 muscle in his dissections of the Orang, Bonnet-Monkey, Mole, Hedgehog 

 common Weasel, Cat, Norway Rat, Squirrel, and Ornithorhynchus. In the 

 Mole it is particularly large and well developed, as are all the muscles of 

 the upper arm. It is also well marked in the Norway Rat and Rabbit. In 

 the subjects of the Table of the present year it has been very carefully 

 looked for, with a view to determine the frequency of its occurrence, and to 

 compare the results with those stated by Professor Gruber of St. Peters- 

 burg, in a paper published in the ' Memoires de I'Acad. des Sciences de 

 St. Petersbourg,' in June 1866. This eminent observer states that he has 

 found this muscle {epitrochleo-anconeus) as frequently as in 34 per cent, of 

 subjects — in 26 out of 79 males, and in 8 out of 21 females. In 14 it was 

 on both sides, in 12 in the right, and in 3 in the left arm only. It seems, 

 therefore, to be more commonly found in the Sclavonic than in the Anglo- 

 Saxon races. Professor Gruber figures and minutely describes this muscle, 

 both in the human subject and in many animals — in Inuus nemestrinus, 

 Cebus fatuellus, Galeopithecus, Myogale, Dasyurus viverrinns, Arctic Bear, 

 Lion, Cat, Hare, 3-banded Armadillo, Seal, and many others. It seems to 

 correspond with the muscle described in the Hyrax by Mivart and Murie 

 as a fourth head of the ti'iceps, and in the Rabbit by Krause as the anconeus 

 quartus. It is figured, but not distinguished from the other anconeal 

 muscles, in Cuvier and Laurillard's plates of the Panther, Genet, Beaver, 

 Marmot, Rat-mole, Great Anteater, Elephant, and many other animals 

 of various genera. 



17. Pronator radii teres. — In 2 males and 2 females this muscle was 



