DE. J. MTJEIE ON THE FOEM ANT) STEUCTTTEE OP THE MANATEE. 



195 



Muscles of the Body and Tail. 



Sp.d. Spinalis dorsi+ Levator caudse in- 



temus, LcL 

 L.d. Longissimus dorsi+ Levator caudse 



externus, Lee. 

 Sp. Splenius; Co. Complexus. 

 Tz. Trapezius; Bh. Rhomboideus. 

 S.l, S.l*. Sacro-lumbalis. 

 Ei. External intercostals. 

 U.o. External oblique. 



L.cd. Lumbo-caudalis. 

 Sc. Sacro-coccygeus. 



P.c\ 

 P.c\ 

 P.c\ 

 P.c\ 

 La.d. 



Different portions of the panniculus 

 camosus muscle ; including the 

 platysma myoides, or transverse 

 nuchal portion of the panniculus. 



Latissimus dorsi. 



f. Dorsal layer of fat. 



Muscles of the Head. 



Te. Temporalis ; ac. Auditory canal. 

 O.p. Orbicularis palpebarum. 

 L.l.s.a.n. Levator labii superioris alaequse 

 nasi. 



L.s.p. Levator labii superioris proprius. 

 B.l.i, B.l.i*. Depressor labii inferioris. 

 B.a.o. Depressor anguli oris. 

 Pc'. Mandibular portions of panniculus. 



I.sp. Infraspinatus. 



B. Deltoid. 



1", T^. Triceps (first and second portions) 



T.ma. Teres major. 



B.a. Brachialis anticus. 



E.md. Extensor minimi digiti. 



Muscles of the Pectoral lAmb. 



PI &c. Palmaris longus &c. 



Sl.&E.c.r.l. Supinator longus and extensor 



carpi radialis longior. 

 E.c.d. Extensor communis digitorum. 

 E.c.u. Extensor carpi ulnaris. 

 E.p.i.p. Extensor primi intemodii 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. The following muscles, vessels, &c., besides are seen partly un- 

 covered. 



B.ab. Rectus abdominis. 



E.o. External oblique. 



I.o. Internal oblique. 



Tra. Transversalis. 



Is.c. Ischio-coccygeus. 



Ifc. Infracoccygeus. 



P.ma, Pma*. Pectoralis major. 



P.mi. Pectoralis minor. 



C.h. Cephalo-humeral. 



St.m. Stemo-mastoid. 



S.hy. Stemo-hyoid and Sterno-thyroid. 



T.%. Thyro-hyoid. 



S. Subscapularis. 



Bi. Digastric. 



Ma. Masseter. 



L.l.i. Levator labii inferioris. 



-4, anus; F, vulva; P/, pelvic bone; Ab.Eete, mammary arteries as a rete mirabile; 

 Cand/, carotid artery and jugular vein; Ax. Bete, axillary plexus of vessels; tr, 

 trachea ; M.gl, mammary gland ; P.gl, parotid gland ; Sx.gl, submaxillary gland. 



