DR. J. MURIE ON THE FORM AND STRUCTURE OF THE MANATEE. 
195 
Muscles of the Body and Tail. 
Sp.d. Spinalis dorsi-+-Levator caude in- 
ternus, Lci. 
L.d. Longissimus dorsi+Levator caude 
externus, Lee. 
Sp. Splenius; Co. Complexus. 
Tz. Trapezius; Rh. Rhomboideus. 
S.1, S.1*. Sacro-lumbalis. 
Ei. External intercostals. 
E.o. External oblique. 
Lcd. Lumbo-caudalis. 
Se. Sacro-coccygeus. 
P.c'.\ Different portions of the panniculus 
P.c’. | carnosus muscle; including the 
P.c’.| platysma myoides, or transverse 
P.c’.) nuchal portion of the panniculus. 
La.d. Uatissimus dorsi. 
f. Dorsal layer of fat. 
Museles of the Head. 
Te. 'Temporalis; ac. Auditory canal. 
O.p. Orbicularis palpebarum. 
L.1.s.an. Levator labii superioris aleequee 
nasi. 
Muscles of the 
I.sp. Infraspinatus. 
D. Deltoid. 
T", T°. Triceps (first and second portions). 
T.ma. Teres major. 
B.a. Brachialis anticus. 
E.md. Extensor minimi digiti. 
L.s.p. Levator labii superioris proprius. 
D.1.i, D.l.i*. Depressor labii inferioris. 
D.a.0. Depressor anguli oris. 
Pe. Mandibular portions of panniculus. 
Pectoral Limb. 
Pi déc. Palmaris longus &c. 
SU.&E.c.r.l. Supinator longus and extensor 
carpi radialis longior. 
E.c.d. Extensor communis digitorum. 
E.c.u. Extensor carpi ulnaris. 
E.pi.p. Extensor primi internodii pollicis. 
Fig. 9. Under surface, showing the superficial muscular layer of the right half of the 
body, and dissected deeper parts of the left moiety. The letters used in 
fig. 8 are applicable to similar parts exposed or cut short in the ventral 
aspect. 
covered. 
R.ab. Rectus abdominis. 
F.o. External oblique. 
I.o. Internal oblique. 
Tra. Transversalis. 
Is.c. Ischio-coccygeus. 
Ife. Infracoccygeus. 
P.ma, Pma*. Pectoralis major. 
P.mi. Pectoralis minor. 
The following muscles, vessels, &c., besides are seen partly un- 
Ch. Cephalo-humeral. 
St.m. Sterno-mastoid. 
S.hy. Sterno-hyoid and Sterno-thyroid. 
Thy. Thyro-hyoid. 
S. Subscapularis. 
Di. Digastric. 
Ma. Masseter. 
L.1i. Levator labii inferioris. 
A, anus; V,vulva; Pl, pelvic bone; Ab. Rete, mammary arteries as a rete mirabile; 
Cand J, carotid artery and jugular vein; Ax.Rete, axillary plexus of vessels; fr, 
trachea; .g/, mammary gland; P.g/, parotid gland; Sw.g/, submaxillary gland. 
