590 DR. J. MURIE ON THE ANATOMY OF THE SEA-LION. 
Pectoral Limb. 
D', Deltoid (first portion). 
D.ep. Dorsi epitrochlearis. 
1 
ms Triceps (two bellies). 
A.e. External anconeus. 
S./. Supinator longus. 
S.b. Supinator brevis. 
E.cri.&b. Separated tendons of the 
united-bellied extensor carpi radialis 
longior and brevior. 
FE.c.d. Extensor communis digitorum 
(three tendons). 
E.me.d. Extensor medii digiti (two 
tendons). 
E.m.d, Extensor minimi digiti (trifid 
tendon). 
E.p.&i. Extensor pollicis et indicis. 
£.0.m.p. Extensor ossis metacarpi pollicis. 
E.c.u. Extensor carpi ulnaris. 
I’, I’, I’, I*. Interossei, seen dorsally. 
P./'. Palmaris longus primus. 
P.?, Palmaris longus secundus. 
P.P. Portion of great deep belly of 
palmaris longus tertius. 
Pa. Its continuation into palmar fascia. 
Prt. Pronator radii teres. 
F.c.r. Flexor carpi radialis. 
F.s.d, F.s.d*. Flexor sublimis digitorum. 
F.pé&l.p. )\ Flexor profundus and longus 
Fp&l.p*. pollicis. 
F.c.u. Flexor carpi ulnaris. 
T, I, Il, IV, V. Digits respectively. 
Muscles of the Pelvie Limb. 
T.vf. Tensor vagine femoris. 
Rf. Rectus femoris. 
V.e. Vastus externus. 
G.mx. Gluteus maximus. 
G.nd. Gluteus medius. 
Bif'**. Biceps femoris (1st and 2nd 
portions). 
T.a. Tibialis anticus; and 
T.a., T.a?. Subdivision of tendon. 
E.p.h. Extensor proprius hallucis. 
E.l.d, E.l.d*. Belly and tendon of the 
extensor longus digitorum just above 
where it subdivides. 
P.1. Peronzus longus. 
P.b. Peronzus brevis (its tendon). 
P.5.d. Peroneeus quinti digiti. 
£.).d‘. Extensor brevis digitorum, first 
division. 
£.b.d’. Extensor brevis digitorum, second 
division. 
A.j.m.d. Abductor brevis minimi digiti. 
A.o.m.’ Abductor ossis metacarpi quinti. 
La. Levator ani. 
Pla. Plantaris. 
T.p. Tibialis posticus. 
Fh. Flexor longus hallucis. 
F.j.d. Flexor longus digitorum. 
I, U7, 111, IV, V. The digits. 
Fig. 16. The right side of the head in profile, exposing the middle layer of muscles. 
The contents of the orbit have been removed: 0.0, orbicularis oris, mandi- 
bular fibres, strongest anteriorly ; Bu, buccinator; Ja’, masseter (2nd layer) ; 
Te', temporal (1st portion); Ze’, temporal (2nd portion); L.sp, levator 
superioris, reflected; L.a.o, levator anguli oris; C.n, compressor naris; D.n, 
depressor nasi; D.a.n, depressor ale nasi; a.c, auditory canal; Jo.n, infra- 
orbital nerves. 
