1895.] ‘NEW YORK ACADEMY OF SCIENCES. 243 
surface of the Pectoralis major tendon. In part continuous 
with this tendon band, in part arising independently from the 
deep surface of Pectoralis tendon, four muscular slips arise, the 
two upper passing backward, the two lower downward, to in- 
corporate themselves with the substance of the Biceps muscle. 
The bundles are all distinctly muscular in character. 
The following additional instances, in which the above de- 
scribed band was present, were noted in the series: 
4. $, U.S. white, aet. 38. December 27, 1893. 
Small glenoid tendon slip joining deep surface of Pectoralis 
major tendon over the bicipital groove. Present on both sides. 
5. % Ireland, aet. 72. January 9, 1894. 
Slip present on both sides. 
6. & Ireland, aet. 40. December 21, 1893. 
Right upper extremity. 
Large tendon hand, arising from capsule external to long 
head of Biceps, inserted on deep surface of Pectoralis “major 
tendon. 
7. & Ireland, aet. 32. November 28, 1893. 
Right side. 
8. ¢ Germany, aet. 54. 
Large band on left side. Insertion confined to Pectoralis 
major tendon. 
9. $ Germany, aet. 52. December 14, 1893. 
Right side. 
Very large tendon 3 inch wide, passing from glenoid margin 
interwoven with the capsule, to the united bellies of Biceps, with 
intermediate attachment to the deep surface of Pectoralis major 
tendon. 
10. ¢ Ireland, aet. 40. 
Both extremities. 
Strong tendon from glenoid edge to deep surface of Pectoralis 
major tendon. 
11. 3 Italy, act. 50. 
Right side. 
Very broad tendon slip, in part continued beyond Pectoralis 
tendon into the Biceps. 
12. 9, U.S., negro, aet. 24. 
Left side: 
Glenoid tendon to junction of heads of Biceps. 
2. GLENO-ULNAR MUSCLE. 
Occurs in three forms or variations : 
(a.) Origin identical with that of the Capsulo-pectoral tendon, 
passing downward and presenting a more or less close connection 
