1869.] THE MYOLOGY OF MENOPOMA. 267 
downwards, and radiad between the ulnaris, the supinator longus, 
and the extensor brevis. It arises from the proximal end of the ulna ; 
and some fibres seem to come from the internal condyle. It is in- 
serted into the ulnar aspect of the radius. 
Flexor longus (figs. 2 & 2a, F. L). This muscle springs from 
the ulnar border of the lower end of the humerus, and, passing down- 
wards and expanding, goes to the palm of the manus, and is inserted 
by delicate tendons into the digits. 
Flexor brevis (fig. 24, F. B). A short triangular muscle which 
may be thus named arises from the ulna and the palmar surface of 
the carpus, and, passing downwards and expanding, goes to the digits. 
Pexvic Limes. 
Semimembranosus (figs. 7,8, 9, & 10, S. M). This small muscle, 
which may perhaps be but a second head of the semitendinosus, 
arises from the underside of the caudal vertebre at about the fourth 
i ! Mi 
WW 
Superficial muscles of ventral surface of right side. 
Ex. O. External oblique. F.C. Femoro-caudal. G. Gracilis. Z Tliacus. ZC. 
Ischio-caudal. Jl. C. Tlio-caudal. S.M. Semimembranosus. S. 7. Semi- 
tendinosus. 7. A. Tibialis anticus. 
