288 Rev. S. Haughton om 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. Infraspinatus*. None. 



12. Teres minor. None. 



13. Infraspinatus secundus. None. 



14. Biceps humeri (scapularis). None. 



15. Brachigeus. 0*51 oz. The brachieeus muscle consists 

 of two distinct portions : — a, brachialis externus, 0'24 oz. ; 

 Z>, brachialis anticusf, 0'27 oz. : of these the portion a is in- 

 serted into the radius, outside the insertion of the biceps ; and 

 the portion h is inserted into the radius, with the tendon of 

 the biceps. 



16. Biceps humeri (coracoidalis). 0*46 oz. 0. from the 

 anterior edge of the coracoid, near the glenoid cavity. I, by 

 a common tendon with brachialis anticus, into the radius. 



17. Triceps longusj. 1*67 oz. 



18. Triceps internus. ^ 



19. Triceps externus. I i o/? 



on Ti • ^ • >1*35 oz. 



20. iriceps accessorms. [ 



21. Ancongeus. J 



22. Pronator radii teres §. None. 



23. Flexor carpi radialis||. 1 rv ko t * j • ^ *t, 

 m T> ^ • ^ ^0 Oo OZ. Inserted mto the 



24. ralmans longus. J 



tendon of the flexor digitorum, in the centre of the palm. 



25. Flexor carpi ulnaris. 0'65 oz. Inserted into the pisi- 

 form bone. 



26. Flexor digitorum sublimis. ~\ 



27. Flexor digitorum profundus. >>0*31 oz. 



28. Flexor pollicis longus. J 



* Meckel describes the infraspinatus as distinct from the supraspinatus. 

 I could not separate them, either in the Crocodile or Alligator. 



t Meckel regards this muscle as a second head of the biceps. 



X The triceps muscle, although it possesses no accessory cutaneous slip 

 arising 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 secimdus ; from a sling tendon suspended between 

 the posterior edges of the scapula and coracoid, allowing the subscapularis 

 to pass between the tendons. 



c. 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. 



II 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 commimis in the centre of the palm of the hand; and its 

 force is expended chiefly on the thumb, index, and middle fingers. 



