DR. J. MURIE ON THE ANATOMY OF THE SEA-LION. 589 
PLATE LXIX. 
Fig. 7. A portion of the body, displaying the pectoral skin-ridges. The chest is seen 
sideways, right side uppermost: C, central sulcus; Ax, the shorter axillary 
plaits and furrows; #, right upper, and Z, left lower surface of the flippers 
as they lie on the sides of the thorax; 7h, segment of throat. 
Fig. 8. Throat and muzzle, seen from below. 
Fig. 9. Right eye and surrounding skin, about nat. size: a@.c, anterior canthus; 7, 
Fig. 10. 
Fig. 11. 
Fig. 12. 
Fig. 13. 
Fig. 14. 
nictitating membrane; ¢, single hair representing the eyebrow. 
Diagrams illustrating the varying shape and diameters of the pupil: 1, vertical 
triangular form when contracted to the utmost; 2, oval, when moderately 
distended ; 3, circular, when fully expanded. All about nat. size. 
Right ear, when contracted: ad nat. 
Outer surface of the same in repose or relaxed. 
Conchal aspect of the same: pinna, with helical lips (4), forcibly everted to 
show the shallow fossa of the concha (c) and its glandular pitting. 
Semidiagrammatic view of the Otary in natural attitude of walking, but with 
entire skin and subdermal tissues removed to expose cutaneous muscular 
layer: Pc! to Pc®, portions of panniculus and platysma, and 0,f, occipito- 
frontalis, as described in text; 7, triceps; D' & Tz, conjoined deltoid 
(primus) and trapezius (secundus); P.ma, pectoralis major; Bi.f, biceps 
femoris. 
PLATE LXX. 
Fig. 15. Myology of the entire body of O. jubata, the panniculus carnosus having been 
removed. 
Head and Neck. 
O.p. Orbicularis palpebrarum. | Di. Digastric. 
L.l.s.a.n. Levator lab. sup. aleq. nasi &e. | My.h. Mylo-hyoid. 
Z. Zygomaticus. _ Sét.h. Sterno-hyoid. 
0.0. Orbicularis oris, St.m. Sterno-mastoid. 
Bu. Buccinator. | Ch. Cephalo-humeral. 
Ma’. Masseter (superficial portion). Sp.cp. Splenius capitis. 
fs S.gl. Submaxillary gland. 
is } Temporalis (two layers). Giihanety sat aq oie 
Te’. 
Trunk. 
Tz, Tz. Trapezius, first and second P.ma*. Pectoralis major, second division. 
portion. E.o. External oblique. 
La.d. Latissimus dorsi. P.c§. Portion of panniculus. 
