Fig. 90. Macacus nemestrinus (adult male). Coronal section of middle portion 

 of plica vocalis. No muscle-fibres in plica ventricularis. Note the upward extent 

 of the M. orico-thyroideus internally to the thyroid cartilage. There is an indica- 

 tion of stratified epithelium on the surface of the plica ventricularis. ( x 8*1.) 



