288 Rev..S. Haughton on the Muscular 
inner surfaces of the acromion, winding out from the inner 
surface to join the outer portion of the muscle. 
10. Supraspinatus.. 0°28 oz. 
11. Infrasponbaa®, None. 
12. Teres minor. None. : 
13. Infraspinatus secundus. None. 
_ 14. Biceps humeri (scapularis). None. 
15. Brachieus. 0°51 oz.. The brachizeus muscle consists 
of two distinct portions :—a, brachialis externus, 0°24 oz.; 
b, brachialis anticust, 0°27 oz.:. of these the portion a is in- 
serted into the radius, outside the insertion of the biceps; and 
the portion 6 is inserted into the radius, with the tendon of 
the biceps. : 
16. Biceps humeri (coracoidalis). 0°46 oz. O. from the 
anterior edge of the coracoid, near the glenoid cavity. I. by 
a common tendon with brachialis anticus, mto the radius. 
17. Triceps longus{. 1°67 oz. 
_ 18. Triceps internus. 
19. Triceps externus. 1°35 
20. Triceps accessorius. aa 
P 
21. Anconzus. 
22. Pronator radii teres§. None. ¥ 
a ac 4 ge radialis |. 0°53 oz. Inserted into the 
. Palmaris longus. : 
tendon of the flexor digitorum, in the centre of the palm. 
25. Flexor carpi ulnaris. 0°65 0z. Inserted into the pisi- 
form bone. 
26. Flexor digitorum sublimis. 
27. Flexor digitorum profundus. +0°31 oz. 
28. Flexor pollicis longus. 
* Meckel describes the infraspinatus as distinct from the supraspinatus. 
I could not separate them, either in the Crocodile or Alligator. 
+ Meckel regards this muscle as a second head of the biceps. 
t The triceps muscle, although it possesses no accessory cutaneous slip 
os from the latissimus dorsi, yet has four heads, viz. :— 
a. Triceps longus; from the posterior edge of the scapula, close to the 
glenoid cavity. — 
b. Triceps longus secundus; from a sling tendon suspended between 
the posterior edges of the scapula and coracoid, allowing the subscapularis 
to pass between the tendons. ; 
ce. Triceps externus ; as usual, 
d. Triceps internus; as usual. 
§ Meckel describes two supinators and two pronators in the forearm of 
the Crocodile: I found one only of each in the Crocodile and in the 
Alligator. - : 
|| This muscle may be the palmaris longus, or, possibly, the flexor pol- 
licis longus: its tendon is inserted, laterally, into the broad tendon of the 
flexor digitorum communis in'the centre of the palm of the hand; and its 
force is expended chiefly on the thumb, index, and middle fingers. 
