MYOLOGY OF THE CHEIEOPTEEA. 
161 
The omohyoid is large and monogastric, the sterno-hyoids and thyroids simple and 
large ; the digastric has two separate bellies and a central rounded tendon, which is 
continued from side to side above the hyoid bone as an arch, from which the parallel 
anterior bellies arise. 
The levator claviculse arises from the middle cervical transverse processes, and passes 
to the outer extremity of the clavicle and the acromion process. The latissimus dorsi 
springs from the nine lowest dorsal vertebrae, from the lumbar fascia, and from the three 
lowest ribs ; it is inserted as usual, but its costal portion sends a thick band up to the 
coracoid process under the coraco-cutaneous and notocoracoid muscles ; it is closely tied 
to the teres major, and the enormous dorsi epitrochlear muscle arises nearly equally from 
both. 
Trapezius is indivisible, and arises from the ligamentum nuchae, from the inner fifth 
of the occipital ridge, and from the six upper dorsal spines ; its upper part is wide and 
its lower narrow, and its insertion is as usual. The rhomboid is in two parts ; the 
occipital portion descends nearly vertically and is inserted into the vertebral edge of 
the praescapula and mesoscapnla. On the left side this muscle was in two bands, one 
arising from the middle line of the occipital bone and inserted into the mesoscapnla, 
the other from the outer third of the supraoccipital ridge and attached to the prsescapula ; 
these were continuous on the right. The levator anguli scapula? arises from the transverse 
processes of the fifth and sixth cervical vertebrae, and is separated from the last by a 
fatty mass. 
Serratus magnus is divided into two parts, an upper, which is attached to two ribs, and 
a lower, which extends from the third to the eleventh ribs ; this latter part is inserted 
into the inferior angle of the scapula only ; the upper is perfectly separate from the 
levator anguli scapulae. 
The subclavius is perfectly separate from the sterno-scapular, which overlies the 
supraspinatus, and is attached to the mesoscapula, the subclavius proper going to the 
clavicle. The scalenus anticus is large and is inserted into the first rib ; the medius 
and posticus are inseparable, and are attached to the four uppermost ribs. The rectus 
abdominis ascends to the first rib ; the serratus posticus superior is inserted into the 
upper five ribs below the first, and the inferior into the five lowest. I could find no 
trachelo-mastoid ; but otherwise the deeper neck-muscles were normal, the complexus 
having no tendinous intersection. 
The subscapularis was not nearly so large as in the Bats, and had three tendinous 
septa in it ; there was no subscapulo-humeral separate ; the supraspinatus is three times 
the size of the infraspinatus. 
Dorsi epitrochlearis is a large fleshy muscle arising from the tendons of the latissimus 
dorsi and teres major (rather more from the latter than from the former). It overlies 
the triceps, is fleshy and thick for its whole length, and is inserted into the inner side of 
the olecranon process. 
Biceps has a small coracoid head joined to the whole length of the coraco-brachialis 
