320 DR. C. F. SONNTACf ON THE ANATOMY 



The Fungiform Papillm (text-fig. 35). 



The fungiform papillae have the usual arrangement, but the 

 rows are maintained far forwards. They form a dorsal bounding 

 zone on which they are numerous, but they are scanty on the 

 ventral zone. 



All are hemispherical, and smooth or granular. None are 

 overlapped by conical papilla?. 



The Conical Papilke (text-fig. 35). 



Arrangement. — Behind the apex there is a dense cluster, but 

 behind this the papilla? are all in oblique chains. No transverse 

 rows are present. Between them the interpapillary dorsum 

 appears in the form of strips. 



The papillary bodies are flat, conical, cylindrical or tuberose, 

 and they have one or more processes which are directed in the 

 usual manner. They are not, however, arranged in zones as 

 in P. porcarius. 



The Lateral Organs (text-fig. 34). 

 Small rounded lamella? are separated by wide primary sulci, so 

 the organs look like rows of small oval bodies. They lie entirely 

 on the lateral borders. The right organ is 1*3 cm. long, and has 

 8 lamina? and 9 sulci. The left organ is 1*2 cm. long, and has 

 10 lamina? and 11 sulci. 



The Frenal Lamella (text-fig. 36). 



The triangular lamella has a rounded apex with a small fissure, 

 but no transverse sulci are present on the upper surface. The 

 edges have small tubercles posteriorly. 



A few orifices of ducts and pits are present on the sides of the 

 base. 



The mesial ventral sulcus has a mesial crest, and the frenum is 

 long and lax. 



Flower (5) states that there is one posterior vallate papilla, but 

 there may be small ones merging into fungiform papilla?, and the 

 latter are large. 



The Mandrill {P. mormon). 



Munch (8) has pointed out how the tongue of P. mormon has 

 a well-developed lateral organ. 



In the specimen wdiich I examined there are five vallate 

 papilla? in the V- formation. The mesial papilla of each limb is 

 small, the two anterior papilla? are large and round, and the 

 posterior papilla, which is the largest of all, is oval (text-fig. 34). 



The left lateral organ has seven lamina? and eight sulci, and the 

 ■ right organ, whose ridges are all furrowed, has five lamina? and 

 six sulci. 



