49 
Intertransversales (Pl. XII. fig. 8. w).—These are two series of short carneous fasciculi 
passing the one between the upper, and the other between the lower transverse pro- 
cesses. 
Levatores costarum (Pl. XII. fig. 3. 2).—The first or most anterior of this series of mus- 
cles seems to represent the scalenus medius (a*) ; it arises from both the upper and lower 
transverse processes of the last cervical vertebra, and expands to be inserted into the first 
rib, and into the upper and outer part of the second rib. The remaining /evatores suc- 
cessively diminish in size as they are placed backwards ; they come off from the trans- 
verse processes of the first six dorsal vertebra ; those from the first and second expand 
to be inserted into the rib attached to the same transverse process and to the one next 
behind ; the rest have a single insertion: the angle and the part of the rib immediately 
beneath are the situations of their attachments. 
Complexus (Pl. XI. XIII. fig. 1. y).—This strong triangular fleshy muscle arises from 
the articular and upper transverse processes of the fourth, third and second cervical 
vertebra, and gradually expands as it advances forwards to be inserted into the occipital 
ridge, from the outer side of the insertion of the biventer cervicis to the mastoid process. 
Recti capitis postici—These small muscles are concealed by the preceding ; they rise 
successively from the spines of the third, second and first cervical vertebre, and expand 
as they advance to be inserted into the occiput. 
Trachelo-mastoideus (Pl. XIII. fig. 1. z).—This strong, subdepressed carneous muscle 
arises from the upper transverse processes of the fifth, fourth, third and second cervical 
vertebrz, and is inserted into the side of the base of the occiput. 
B. In Front of the Neck. 
Longus colli (Pl. XII. fig. 2. & XIV. a),—This large and long muscle, which appears 
simple when first exposed, as in Pl. XIII, fig. 2, is found to consist, when unravelled by 
further dissection, of a series of closely succeeding long, narrow fasciculi, arising from 
the heemapophyses of the sixth dorsal to the first dorsal and from the ten posterior cer- 
vical vertebre (Pl. XIV. aa); and sending narrow tendons (ib, a*) which increase in 
length as they are given off more anteriorly, obliquely forwards and outwards, to be in- 
serted into the costal processes of all the cervical vertebra save the first two: the highest 
or foremost tendon (ib. a**) is attached to the tubercle at the under part of the ring of 
the atlas; but this tendon is also the medium of insertion of five small fasciculi of mus- 
cular fibres (Pl, XIV. fig. 2. a**) arising from the upper transverse processes of the sixth, 
fifth, fourth, third and second cervical vertebra. 
The Rectus capitis anticus major (Pl. XIV. 6) is continued, or arises by as many di- 
stinct tendons, from the five superior tendons of insertion of the preceding muscle ; 
these origins soon become fleshy, converge, and coalesce previous to their insertion into 
the base of the skull. 
H 
