594 DR. J. MURIE ON THE ANATOMY OF THE SEA-LION. 
LETTERS APPLICABLE TO THE POSTERIOR SEGMENT. 
E.0, E.o*, External oblique. 
f.o. Portion of internal oblique. 
Tr. Partial view of transversalis. 
f.ab. Rectus abdominis, hind portion 
(outline continued by dotted line). 
Sa.¢R.f. Sartorius and rectus femoris. 
Pe. Pectineus. 
Zi. Tliacus. 
Ad.l. Adductor longus. 
Ad.m', Ad.m?. 
and second divisions. 
Gr. Gracilis. 
Sm. Semimembranosus. 
St. Semitendinosus. 
Ia. Levator ani. 
Adductor magnus, first 
T.p. Transversus perinei. 
B.c. Bulbus cavernosus. 
é.c, external cutaneous nerve ; é.p, external popliteal, and 7.p, internal popliteal nerve ; 
¢, spermatic cord ; ¢e, testicle; is.f, ischio-rectal fossa; *, ischio-rectal fascia; @, anus ; 
Pp; penis, cut across; p.t, posterior tibial artery and nerve ; g/, lymphatic gland. 
Fig. 34. Dissection of the rump, it being looked at from above downwards. The 
superficial muscles of the gluteal region and lower leg as far as the ankle 
are preserved in place on the right side; a deeper series and tail-muscles are 
displayed on the left. 
Rieur Sire. 
Sa. Sartorius. 
Rf. Rectus femoris. 
V.e. Vastus externus. 
G.md. Gluteus medius. 
G.ma'. Gluteus maximus (free portion). 
Bf’. Biceps femoris. 
Bf?. Biceps femoris (second part). 
Ga. and So. Gastrocnemius and soleus. 
Ab.o.m’. Abductor ossis metacarpi quinti. 
Ab.m.d. Abductor minimi digiti. 
Lert Srvz. 
Spd. Termination spinalis dorsi. 
Lic.e. Levator caude externus. 
L.ci. Levator caude internus, its tendons 
dragged out (L.c.7*). 
S.p. Sacro-peroneus. 
G.max*. Gluteus maximus (second layer), 
and G.mz'. Insertion of first portion. 
So.So*. Soleus. 
Sm. Semimembranosus. 
LI.a. “evator ani. 
Ga. Gastrocnemius. 
Fig. 85. Sketch of side view of pelvis and leg to below knee-joint, exposing deepest 
fleshy area, and also relative attachments of portions of superficial muscles. 
E.sp. Erector spine indicated. 
L.ci. Levator caude internus. 
Sa. Sartorius (its origin). 
Rf. Rectus femoris (its origin). 
Gi. Gluteus minimus (entire). 
Py. Pyriformis (entire). 
G.s. Gemellus superior. 
G.i. Gemellus inferior. 
0.7. Obturator internus (in part, insertion). 
O.e. Obturator externus (origin). 
Q.f. Quadratus femoris. 
G.ma' and G.ma’. Origins of glutei maximi. 
Sp. Sacro-peronieus. 
Sm. Semimembranosus (origin). 
Za. Levator ani (origin). 
Ad.m. Adductor magnus (origin). 
Ad.l' and Ad./’. Adductores longi (origin). 
Ad.b, Adductores breves (bellies, &c.). 
Gr. Gyracilis (cut short). 
t. Trochanter, P, patella, and /.p, liga- 
mentum patelle. 
