72 
sor. Surface of origin of scapular triceps. 
o.tr. M. triceps (outer humeral head). 
an.e. “* anconeus externus (anconeus quartus), 
ext. Extensor muscular mass of antebrachium. 
Puate IX. 
Fig. 9.—Right anterior extremity. Dorsal aspect of forearm and manus, 
viewed slightly from the ulnar side. x 4. 
6 if. Scapular head of triceps. 
ld. M. latissimus dorsi. 
an.e. “* anconeus externus. 
€.€.U- i extensor carpi ulnaris. 
Ct ad 7 ad communis digitorum (first and second parts). 
C:C.1 . a carpi radialis. 
€.1.M. $8 s indicis et medii digiti. 
€.1. Dp. a rf ossis metacarpi pollicis (abductor poll. longus). 
fC.4L. ‘* flexor carpi ulnaris. 
d.c.lig. Dorsal carpal (posterior annular) ligament. 
rad. sty. Styloid process of radius. 
ect. Ectocondyle. 
Ol. Olecranon. 
I1I., Iv., V. Claws of 3rd, 4th, and Sth digits respectively. 
PLATE X. 
Fig. 10.—Right anterior extremity. Muscles of palmar aspect of forearm. 
x 4. 
pect. Pectoral muscles. 
faUce: M. biceps flexor antebrachii. 
b.a. ‘* prachialis anticus. 
Dt. “* pronator radii teres. 
C07 ** extensor carpi radialis. 
flex.dig. ‘* flexor digitorum. 
abd.poll. ‘* abductor pollicis (brevis). 
€.m.p. ‘* extensor ossis metacarpi pollicis (abductor pollicis longus). 
€.U.M. ‘* extensor indicis et medii digiti. 
p.Ses. Palmar sesamoid bone. 
rad.sty. Styloid process of radius. 
for.f.c.r._Foramen in scapholunar for tendon of M. flexor carpi radialis. 
1.,11., 1. Claws of Ist, 2nd, and 3rd digits respectively. 
PuatTe XI. 
Fig. 11.—Right anterior extremity. View of radial aspect of forearm and 
manus. xX 4. 
Css Te M. extensor carpi radialis. 
p:7.t. ** pronator radii teres. 
tae *¢ flexor carpi radialis. 
€.M.p- ** extensor ossis metacarpi pollicis (abductor poll. longus). 
€.0.M. “* extensor indicis et medii digiti. 
e.c.d.1. ** extensor communis digitorum (tendon for digit 3). 
vrad.sty. | Styloid process of radius. 
p.ann.lig. Dorsal carpal (posterior annular) ligament. 
pel, Proximal phalanx of pollex. 
1.,11., 11. Claws of Ist, 2nd, and 3rd digits. 
