1869. | MYOLOGY OF MENOBRANCAUS LATERALIS. 455 
tending from the extreme end of the opisthotic forwards and down- 
wards to the distal end of the quadratum (fig. 2, D. 2). This portion 
is entirely hidden until either the masseter is drawn forwards or the 
digastric backwards. 
Deeper muscles of right side of head, the masseter being drawn forwards and 
inwards, the first part of the digastric outwards. 
C. H. E. Cerato-hyoideus externus. D.1. First part of digastric. D.2. Second 
part of digastric. L.A. Levatoresarcuum. JZ. A.1. Most anterior part of 
the same. JZ. A. P. Levator arcus primi. MM. Masseter. 7. Temporalis. 
Superficial muscles of right side and of extensor surface of right pectoral limb. 
A, B, Adductor branchiarum. ZB. Biceps. C.P. Constrictor pharyngis. C. H. E. 
Cerato-hyoideus externus. D. Deltoid. D.1. First part of digastric. 
E. B. Extensor brevis. £.Z. Extensor longus. Ex. O. External oblique. 
L.A. Levatores arcuum. L, A.1. First part of the same. Z.D. Latis- 
simus dorsi. MM. Masseter. M.H.2. Mylo-hyoideus posterior. 0. H. 
Omo-hyoid. S, Subelavius. S.Z.1& §.Z.2. Supinator longus. ZT. Tem- 
poralis. Zz. Trapezius. 7.2. Triceps. U. Ulnaris. 
