OF THE TONGUES OF THE MAMMALIA. 



21 



pedunculated. Some run into the lateral organs (text-fig. 6, 

 FP). 



The Conical Papillae. 

 On the anterior two-thirds of the dorsum the conical papilla? are 

 strong and coarse, and give the tongue a rough appearance. Their 

 disposition in clusters and rows is not very clearly marked, but is 

 maintained. Several groups are arranged in an undulating 

 manner, and the points of the papilla? point backwards, back- 

 wards and outwards, or backwards and inwards (text-fig. 6). 

 They conceal several of the fungiform papilla?. 



Text-figure 6. 



The tongue of Hylobates Jioolock, showing the dorsum, inferior sin-face, 

 and right lateral organ. 



Behind the vallate pap dice the tongue is covered with cylindrical 

 conical forms. On the area lying between the lateral vallate 

 papilla? and the level of the posterior pole of the rampart common 

 to the two mesial vallate papilla? they are small, but behind that 

 level they are large, and many have strong single processes (text- 

 fig- 9, 5). There are some small cylindrical forms anterior to 

 the vallate papilla?. 



The characters and disposition of the conical papilla? on the 

 sides and inferior surface are the same as in all other Anthropoids. 



The Lateral Organs (text-fig. 6). 

 Right organ : Length 1 '2 cm. Ridges 12. Sulci 13. 

 Left organ : Length 1*25 cm. Ridges 10. Sidci 11. 



