6 



DR. C. F. S0NNTAG ON THE ANATOMY 



tongues, and I agree with Humphry (142) that some of them 

 may be a quarter of an inch long. 



These pedunculated papillae are smaller and fewer than in the 

 Gorilla, and larger and more numerous than in the Gibbons. 

 They are absent altogether in the Orang-Outan. Their surfaces 

 are smooth or granular. The different forms of papilla? are 

 shown in text-fig. 2 A, m-o. 



II 



o o o o o = 



3. be d. e f. 



Text-figure 2. 



h. i. 

 m 



jzx. 



% 



* 



9 # 

 



f 

 • 



9 W 'A' 



The papillae and lateral organs of Anthropopithecus troglodytes. 



a-l, conical papillae ; m-o, fungiform papillae ; jo-^u, circumvallate papillae ; 

 AA', lateral organ ; the three figures on the left side of the bottom row 

 are vallate patterns, described in the text as 2 B. 



The Conical Papillce (text-fig. 1 B, a, e, &/)• 

 The conical papilla? have the same form of arrangement as the 

 fungiforms, and they are seen to the best advantage when the 

 tongue is allowed to dry, for they then stand up on the surface. 

 All their points are directed backwards. 



They increase in size from before backwards, and from without 

 inwards, the largest ones on the anterior part of the dorsum 

 being in and around the median sulcus. They overlap the fungi- 

 form papilla? and conceal some of them entirely. In one of my 

 specimens they stand on ridges like those on the finger-tips. 



They belong to both cylindrical and filiform groups. The 

 filiform varieties have one or more points. When there is only 

 one the papilla is tapering, and circular on section. When 



