1895. ] NEW YORK ACADEMY OF SCIENCES. 257 
The variation is interesting as affording an instance of con- 
tinuity of the Biceps with the Brachialis anticus, and hence of 
a direct ulnar destination of some of the bicipital glenoid fibres. 
Variations of insertion pointing to ulnar attachment of Biceps. 
1. g, Assyria, aet. 28. November 15, 1894. 
Plate XLV. Right upper extremity. 
A muscular belly, entirely separate from Brachialis anticus, 
arises from the lower part of the inner margin of the humeral 
shaft, and passes downwards and outwards, underneath the Bi- 
ceps, dividing into two portions. The internal division passes 
to reinforce the semilunar fascia; the external stronger bundle 
dips into the cubital fossa to the inner side of the radial Biceps 
tendon, joining it, and giving some fibres to the fascia of the 
Supinator brevis. The additional muscle in this instance is evi- 
dently a compound of portions of both Coraco-radial and Coraco- 
ulnar, whose origin has shifted downwards to the humeral 
shaft, the proximal portion remaining as the coracoid head of 
the regular Biceps and the Coraco-brachialis. 
The compound character of both the external radial tendon of 
the Biceps and of the semilunar fascia (internal or ulnar tendon ) 
is well shown by this case. 
2. g, Ireland, aet. 57. October 7, 1893. 
Right upper. 
Tendon slip from radial biceps insertion into lesser head of 
Pronator teres. 
3. g, Germany, aet. 58. January 23, 1894. 
Right upper. 
Tendon slip from radial Biceps tendon into Pronator teres and 
deep fascia of forearm. 
Macalister * describes insertions of the Biceps into the coro- 
noid process, Pronator teres, Coronoid insertion of Brachialis 
anticus, capsule of elbow and the origin of some of the flexor 
muscles. 
While completing this paper a number of additional bicipital 
variations, bearing out the views expressed relative to the com- 
position of the muscle, have come under observation. Among 
them the two following instances illustrate some of the import- 
ant morphological features of the muscle so well that they are 
added to this paper. 
1. g, Ireland, aet. 67. January 22, 1895. 
Plate XLVI. Left upper extremity. 
I, Glenoid Heads. 
The outer bicipital head (Gleno-radial) is well developed. In: 
its upper portion the tendon is overlapped by a distinct band, 
* Op. cit., p. 83. 
TRANSACTIONS N. Y. ACAD. S@r., Vol. XIV., Sig. 17, August 29, 1895. 
