176 MR. F, E. BEDDARD ON THE [| Feb. 16, 
the scapula, where it comes into contact with the anterior edge of 
the subscapularis muscle. It arches over the tendon of origin of 
the biceps and is muscular at its insertion, with homer er a 
glistening tendinous surface. 
The infr aspinatus is distinctly divided at and for some little 
way in front of its (therefore) double insertion into two layers, of 
which one overlies the other. 
Teres minor is a slender muscle ending in a long flat tendon 
below the insertion of the spinous part of the deltoid, and there- 
fore considerably below the insertions of the infraspinatus, which 
are above that of the section of the deltoid referred to. 
The teres major is a very much larger muscle, flat and strap- 
shaped, and closely connected with the latissimus dorsi near to 
insertion. 
Biceps.—This muscle is single-headed, as in other Ungulates. 
The strong tendon of origin seems to me to arise very distinctly 
from the coracoid process, but also doubtless from the adjacent 
margin of the glenoid cavity. Low down on the arm and at the 
end of the insertion of the pectoralis, a stout fibrous band is given 
off which runs diagonally towards the elbow. This is chiefly 
connected with the lower end of the pectoralis, but is adherent to 
the biceps where it crosses it. A little further down and just 
before its insertion the biceps is connected with a stout tendinous 
sheet running down the forearm, in the centre of which is a 
stouter tendon which can be seen to end on the surface of the 
biceps. 
The brachialis anticus winds round the humerus in the way 
that has been described in other Ungulates. Its insertion is. 
remarkable for the fact that it is adherent by a tendon to the 
stout tendinous plate running down the forearm, which has just 
been described, in connection with the biceps before its definite 
insertion on to the ulna. 
Triceps.—This muscle consists of at least four very distinct 
parts, unless it were better to term one of these anconeus. Of 
these heads the scapular was precisely as described by Windle & 
Parsons, arising from a large portion of the axillary border of the 
scapula. When cut across transversely, there were considerable 
indications of the division of this muscle into two layers, as also 
noted by those authors. The imner humeral head seems to be 
peculiar in some respects. It arises below the coracobrachialis 
and immediately divides into two muscles, of which the posterior 
is more or less cylindrical in form in the middle and circular in 
transverse section, and is totally free from any connection with 
the shaft of the humerus. The larger portion, that lying anterior, 
has an origin from the humerus for about halfway down the 
shaft of that bone. When it becomes free it is rejoined by the 
other slip of the muscle just before mentioned, and the two form 
a flat tendon at the internal condyle. The external head arises 
on the opposite side of the humerus and is a broader and strap- 
shaped muscle. It closely covers the brachialis anticus at its 
