EXPLANATION 
OF 
PLATE 17. 
Fig. 1—4. Diagrams of Ihe facial muscles of Mammals, save the muscles of the external ear. 1 the super¬ 
ficial muscles, 2—4 successively deeper muscles, p. auricul., p. intermedia, p. palpebr. and p. oris are Ihe various 
portions of the inuscuhis sphincter profundus. 
Fig. 5—14. Diagrams of sagittal sections of the snout, resp. the proboscis, of various Mammals. The dia¬ 
grams illustrate the morphology of the proboscis, i incisor, n nostril, p hard palate. The skin round the nares 
is marked by a broad black line, the front side of Ihe upper lip by a red one, and the posterior side of Ihe 
same by a deep blue one. The bones are yellow, the cartilage light blue, connective tissue grey. — In the 
Talpa-foetus (fig. 11) the portion of the skin marked by the red line has still a vertical, not a horizontal po¬ 
sition as in the adult (fig. 10). — Comp, for the other figures the text p. 47—50. 
