318 DR. C. F. SONNTAG ON THE ANATOMY 



of medium size ; and their bodies are cylindrical, conical or 

 f usiform, and are plain or have processes. Behind the zone and 

 extending on to the epiglottis are large papillae which are 

 spherical, shield-like or tuberose ; they may or may not have 

 processes. On the sides and inferior surface the papillae are 

 small and filiform. 



Lymphoid Nodules and Glands. 

 The base of the tongue has glands and lymphoid nodules of 

 variable size, and large duct orifices are present in rows on the 

 elongated lateral masses. It is difficult, without preparing 

 sections, to determine whether a small nodule is a large papilla 

 or a lymphoid nodule. 



The Lateral Organs. 

 The lateral organs consist of small fissures and laminae on the 

 lateral borders and dorsum. All the laminae have small secondary 

 fissures, and the primary or interlaminar sulci are wide. All the 

 fissures of the left organ run from below forwards and upwards, 

 but those of the right lateral organ run forwards, upwards, or 

 backwards. The measurements, laminae, and sulci are shown 

 as follows : — 



Organ. Length. Lamince. Sulci. 



Right 1-9 cm. 11 12 



Left 1-8 „ 10 11 



The Inferior Papillary Zone. 



The papillary bounding zone of the inferior surface is wide 

 round the apex, but narrows as it is traced posteriorly. It is, in 

 the former situation, closely dotted by small conical and fungiform 

 papillae. 



Plica? fimbriates are absent in my specimen. 



The mesial stclcus is shallow and wide. 



The frenum is long and lax. 



The Frenal Lamella. 

 The lamella is triangular in shape, but the edges sweep round 

 to the bifid apex, and the dividing fissure is deep. The edges 

 also run back to below the middle of the lateral organs and axe 

 crenated or bear processes. The upper surface has a mesial 

 longitudinal sulcus from which short, horizontal fissures pass out 

 across the lamella. 



The Anubis Baboon (P. anubis). 



Habitat : West Africa. 



Measurements. — Total length 9 -2 cm. ; length of the oral part 

 6-6 cm.; length of the pharyngeal part 2*6 cm.; width between 

 the lingual attachments of the palato-glossal folds 3 cm. ; width 

 of the anterior third 3-2 cm. 



