116 
PEOFESSOE WOOD ON THE NECK- AND SHOULD,® E-MUSCLES. 
Fig. 24. 
Fig. 25. 
Fig. 26. 
Fig. 27. 
Fig. 28. 
Fig. 29. 
Front view of the right shoulder-muscles of the Weasel , detached from the 
trunk and dissected. 
Front view of the same parts in the Norway Rat (Mus decumanus). 
Front view of the right neck- and shoulder-muscles in the same animal, 
drawn while still attached to the trunk, to show the relations of the 
sterno-mastoid (a), the cleido-mastoid (5), and the cleido-occipital (c), at their 
attachment to the clavicle (x) (which is cut in the middle, and the outer end 
thrown back), with the fibres of the subclavius (pi) and the sterno-scapular 
(i) (the latter sending one slip to the acromion and another to the cervical 
border of the scapula). The figure also shows the sterno-costalis muscle ( n ) 
arising, close to the latter, from the first rib, and its relation to the rectus 
thoracicus (Rt) and the scalenus medius (j). 
Front view of the muscles on the left side of the thorax of the Dog, showing 
the sterno-costalis or supracostalis muscle (n), and its relation to the scalenus 
anticus ( j ), the scalenus medius (/), and the pectorals (P and p). 
Diagram of the muscles of the scapulo- clavicular arch and the sterno-costalis 
treated of in this paper, showing their relative positions to each other. 
Remarkable formation of the cleido-occipital variety (found in two male subjects 
in the dissecting-rooms of King’s College, in one on both sides, and in the 
other on the left side only) strongly resembling the formation of the homo- 
logous muscle in the striped Hyaena, Polecat, Genette, Coati, and Marmot, as 
given in Cuvier and Laurillard’s plates. 
All the figures in the Plates were drawn by the author from his own dissections, 
except figs. 2 to 6 inclusive, which were sketched from nature by Mr. J. B. Perrin, and 
figs. 20 & 21, which were sketched in the same manner by Mr. Nettleship. 
