100 ELEMENTS OF MAMMALIAN ANATOMY. 
Fic. 51. VENTRAL Aspect oF Muscles oF CaupaL Portion oF TRUNK 
AND THIGH. 
a, Transversalis abdominis becoming aponeurotic; adct, adductor mag- 
nus; ¢c, pectineus; ex. ob, external oblique, whose aponeurosis on the 
left side is removed; f, aponeurosis of external oblique; grc, gracilis 
with its middle part cut out on the left side; m, median ventral 
line; ps, psoas magnus; fp, penis; rcf, rectus femoris; rct, rectus 
abdominis; sar, sartorius with its middle part cut out on the left 
side; smb, semimembranosus; smt, semitendinosus; spimc, spermatic 
cord; t, aponeurosis; frs, internal oblique with a rectangular piece 
cut out to show the rectus and transversalis; tug, tensor vaginze 
femoris; ts, testicle; vi, vastus internus; x, external abdominal 
ring. 
Fic. 52. Laterat Aspect oF THE MuSCLES OF THE LEG WITH THE 
GuiuTE1, TENSOR VAGIN FEMoRIS, SEMITENDINOSUS, AND BICEPS 
Femoris REMoveD. 
a, Portion of semimembranosus; ab, adductor magnus; 6, peroneus ter- 
tius; c, abductor ossis metatarsi; ct, cut surface of the vastus ex- 
ternus; d, peroneus brevis; eld, extensor longus digitorum; gas, 
gastrocnemius; /, tendinous loop; /p, annular ligament; It, ex- 
ternal lateral ligament of the knee-joint; /g, tendon of the extensor 
longus digitorum; o, tendinous arch of the peroneus longus; ac, 
os calcis; pl, peroneus longus; ret, rectus femoris; ft, ligamentum 
patelle; tr, greater trochanter; ¢s, soleus; tg, tendon of gastro- 
cnemius; ¢pl, tendon of the plantaris; tb, tibialis anticus; vex, 
vastus externus with a piece cut out, 
