164 
DR. J. MURIE ON THE ANATOMY OF THE WALRUS. a 
sac is attached by a fibrous band to the caudal membrane below. Spe. 
Spermatic cord. ep. Epididymis. Zo. External oblique muscle of abdo- 
men, cut across. Sa. Sartorius. Pe. Pectineus. Al. Adductor longus. Amg. 
Adductor magnus. Gr. Gracilis. St. Semitendinosus. La. Levator ani, lying 
across tail. oc. Position of the os calcis. 
. The external auditory canal and auricular muscles, reduced to about half natural 
size. ac. Auditory canal, or cartilaginous tube. ma. Meatus auditorius. 
atl. Attollens, atr. Attrahens, and reé. retrahens aurem muscles. 
. Section of the tissues of the muzzle cut tangentially through the roots of some 
of the larger bristles. Designed to show their structure and the muscular 
fibrille interwoven between them. /h. Horny layer of bristle; and p, pulp. 
m. Muscle. 
. Front view of the larynx and hyoidean apparatus; the lingual muscles cut 
short are merely indicated by (Gh) remnants of the genio-hyo-glossi &c. 
S.h. Insertions of sterno-hyoidei. Zh. Thyro-hyoid. Sth. Cut portion of 
left sterno-thyroid. Cth. Crico-thyroid. 7. ‘Thyroid ala. C, Cricoid. tr. 
Trachea. 
. View of the tongue and pharyngeal cavity displayed as an anatomical prepara- 
tion. ft. Filiform, fg. Fungiform, and cv. Circumvallate papille. «@,. CEso- 
phagus, the rings of the trachea seen at its sides and above the pharynx, 
which has been opened; at the hook the strong constrictor muscles are 
dragged to either side. ep. Epiglottis. @. Fleshy prominence above the 
arytenoid cartilage ; the small chink of the glottis immediately in front. 
. Reduced semidiagrammatic side view of the larynx. 7. Thyroid, and C. Cricoid 
cartilage. ic. Inferior cornu. 
