VISCERA OF AN 0 K API. 



199 



Muscles of the larynx of Okapia johnstoni. 



a.m., arytamoideus muscle ; c.a.lm.. crico-arytamoideus lateralis muscle ; c.a.p.m., 

 crico-aryt»noideus posticus muscle ; c.pli.m., crieo-pharyngeal muscle ; 

 c.tJi.m., crico-thyroideus muscle; e.gl., epiglottis; liy.e.m., hyo-epiglottidean 

 muscle; th.a.m., thyro-arytaenoideus muscles; s.c, cartilage of Santorini. 



Text-figure 15. 



Longitudinal section of the pharynx and larynx of Okapia johnstoni. 



a.c, arytenoid cartilage; a.p.ph., arcus palato-pharyngeus (posterior pillar of fauces) ; 

 cr., cricoid cartilage; oss., oesophagus ; p., soft palate; t.f., tonsillar fossa ; 

 th.c, thyroid cartilage ; v.c, vocal cord. 



Other lettering as iq text-fig. 14. 



