504 



DR. C. F. SONNTAG ON THE ANATOMY 



lateral sides of the resulting rhomboid. Tuckerman states that 

 there are three papillae within the vallate area, but believes that 

 they are intermediate between the fungiform and vallate groups. 

 All the papillae are circular, the fossse are well-marked, and the 

 Valiums appear as clear zones. They vary in prominence, but 

 the posterior papillae (0, h) project to a greater extent than the 

 others. All are smooth and glistening. 



Only conical papillaj are seen within the vallate area. 



The papillae of the anterior pair are level with the most anterior 

 laminae and sulci of the lateral organs. They may be excavated 

 (text-fig. 42 0, a). 



Text-figure 42. 



-iT-nr-s. 



1 



AJfAf^n o. 



The tongue of Ateles ater. 



The Fungiform Pa-pillce (text-fig. 42 A & B^, which are larger 

 than in A. grisescens, form a narrow dorsal bounding zone on 

 which they have the usual arrangement. They are numerous, 

 but small. On the inferior surface they are large ; round the 

 under surface of the apex they are closely aggregated, but farther 

 • back they are discrete (text-fig. 42 B). 



Tuckerman showed how the fungiform papillae on the under 

 surface of the apex are richly supplied with taste-buds. 



The Conical Paqnllce (text-fig. 42 A^ are all very small, those 

 at the posterior part of the tongue, which ai-e the largest, being 



