DR. J. MURIE ON THE ANATOMY OF THE SEA-LION. 595 
Fig. 36. A hind segment of the body and posterior limbs, the right only as far as the 
ankle. The superficial layer of the loin-muscles and outline of those of the 
groin &c. shown on the right; and on the left a deeper dissection of the 
lumbar region, adductors of thigh, leg, and plantar muscles and tendons are 
demonstrated. The right moiety of the pelvis is dragged out to show the 
infracaudal muscles. Lettering applies as in figs. 33, 34, and 35; but in 
addition there are:—JD, diaphragm, its spinal attachment, and the dotted 
line indicates its costal circuit; Q./, quadratus lumborum; Ps, Ps*, psoas; 
Ji, iliacus; P. & Ic, Pubo- and ilio-coccygeus; S.c, sacro-coccygeus, tendons 
separated ; V.7, vastus internus ; Ad.b' & Ad.b*, adductor brevis (first and second 
portions); Ad./’ & Ad.l*, adductor longus (its two parts); T.p, tibialis pos- 
ticus; M.1.A, F.1.h*, Flexor longus hallucis; F./.d, Flexor longus digitorum ; 
Pla, plantaris; Ab.m.d, abductor minimi digiti; 2.4.m.d, flexor brevis 
minimi digiti; /’.d.d, flexor brevis digitorum; s, left symphysis pubis, in 
situ; e.gl, coccygeal gland?; e.c, external cutaneous nerve. 
Fig. 37. Deep muscles, lower and inner side, of left leg and sole. There remains only 
the bones from condyle of femur to the tarsus, the latter twisted to a line 
with the 7./ (internal lateral ligament of knee-joint): 0.¢, os calcis; LZ vo L*, 
first to sixth lumbricales, as described; JZ to V respectively indicate the 
digits; other letters as in preceding figures. 
Fig. 58. Plantar surface of sole of left hind foot, to just beyond the distal ends of the 
metacarpals: ¢, tibial malleolus; 0.¢, os calcis; a, astragalus; D.p.f, deep 
plantar fascia; Ad.o.m.5, abductor ossis metacarpi quinti; Ad.m.d, abductor 
minimi digiti; /.4.m.d, flexor brevis minimi digiti, 1 & 2, its tendons of origin ; 
Si‘ and S.i*, fleshy horns or bellies of the superficial interosseous muscular 
layer: the crescentic dotted line gives its real limits; it is thinnest in the 
middle, and here partially removed, to display the deep interossei; 1, single 
hallucial deep interosseous muscle; 2, 3, 4, 5, pairs of interossei of corre- 
sponding digits; Ga and So, Insertions of gastrocnemius and soleus. 
Fig. 39. A different and deeper view of plantar surface and ligaments of sole of left 
hind foot. The lower extremities of the fibula (/’) and tibia (7) are set at 
about a right angle to the foot, and seen somewhat from behind and within. 
z./, internal lateral ligament; ¢.s*, inferior calcaneo-scaphoid or deep plantar 
ligament; @.c’, a.c*, a.c*, respective divisions of the astragalo-calcaneal liga- 
ments; c¢.c', c.c, ¢.c*, caleaneo-cuboid ligamentous slips; ¢, transverse inter- 
metatarsal ligaments; Z'p, tibialis posticus muscle ; Ad.h, adductor hallucis? 
Fb.h, flexor brevis hallucis?; P./, tendon of peronxus longus; J to J, digits. 
Fig. 40. Ligaments of the left ankle-joint and foot, outside and on the dorsal aspect : 
7‘, superior, and 2”, inferior interosseous band between the tibia (Z’) and 
fibula (F’); 7.t.p, inferior tibio-peroneal ; e./' and ¢./’, first and second divisions 
