1867.] DR. A. MACALISTER ON GLOBIOCEPHALUS SVINEVAL. 481 



tendinous from the basilar process of the occipital bone, and ran back- 

 wards to be inserted into the posterior border of the thyroid carti- 

 lage, the thyro-hyoid membrane, and the posterior cornu of the 

 hyoid bone. This muscle underlay the last named, with which it 

 was partly continuous ; it seemed to be an expanded representative 

 of the cephalo-pharyngeus of Theile (figured as a human muscle in 

 the Proc. R. I. A. vol. ix. pi. 6. f. 1 b). 



Relating to the actions of these muscles, there are many points 

 very well worthy of note ; but I refrain from making any observations 

 at present on the subject, as they will be detailed at length by Dr. 

 Carte and myself on a future occasion in connexion with the anatomy 

 of Balcenoptera rostrata. 



The muscles of the spine which remained in the specimen were : — 

 1. Depressor caudae. 2. A fragment of levator caudse. 3. A small 

 part of latissimus dorsi ; besides the following: — 4. Scalenus an- 

 ticus, from the first rib to the front of the transverse processes of 

 the upper cervical vertebra. 5. Scalenus medius and posticus con- 

 joined, from the first and second ribs to the upper cervical transverse 

 and spinous processes ; the portion attached to the latter was pro- 

 bably the germ of the serratus posticus superior, which otherwise 

 was not visible. G. Trachelo-mastoid, from the transverse process of 

 the first cervical vertebra to the external side of the occipital bone at 

 the junction of the exoccipital and paramastoid elements. 7. Rectus 

 capitis posticus, from posterior part of the atlas to the hinder edge 

 of the foramen magnum and occipital bone above that level. 8. Rec- 

 tus capitis anticus, from the front of the bodies of the cervical ver- 

 tebrse to the basilar process of the occipital bone. 



Tiiere were some points of interest in the dissection of the paddle 

 or fore limb. On removing its thick greyish-black integument, all 

 the bony elements of the typical anterior extremity were found in it, 

 although some, as the carpus, metacarpus, and phalanges, were 

 purely cartilaginous ; consequently the exact number of the latter 

 could not be distinctly reckoned. The dorso-scapular group of 

 muscles had been removed before the subject was examined ; but 

 traces of a deltoid supraspinatus and infraspinatus existed, though 

 there was no sign of a teres minor or teres major, which are present 

 in Dolphins. 



The subscapularis, which was attached as usual to the subscapular 

 fossa and inner side of the head of the humerus, was completely 

 intersected by eight tendinous planes slightly radiating towards the 

 posterior edge : this point is of interest, as in Balcenoptera rostrata 

 there is hardly any sign of these intersections, otherwise so uniformly 

 found in so many animals. This muscle does not pierce the capsule 

 of the shoulder, nor is there a bursa beneath its tendon. 



The coraco-brachialis was short and fleshy, arising from the front 

 of the coracoid process, whence it passed to be inserted into the cap- 

 sule of the shoulder and into the front of the neck of the humerus. 

 This corresponds to the short variety of this muscle described by 

 many anatomists, noticed by Mr. Wood and others as an occasional 

 occurrence in Man (Journal of Anat. & Phys. vol. i. p. 4". f. 2), 



Proc. Zool. See— 18(J7, No. XXXI. 



