OF THE TONGUES OF THE MAMMALIA. 



301 



directed in the usual manner. The inter-papillary dorsum forms 

 strips (text-fig. 25 M & N). 



On the base of the tongue the glands and lymphoid nodules 

 form elevations of different sizes, and a few minute orifices of 

 ducts and pits are present. 



The Lateral Organs (text-fig. 25 K & L). 

 The lamina? and sulci are short and either straight or convex 

 forwards. The lamina? are mostly traversed by secondary sulci, 

 and the main sulci vary in width. The left organ is I'l cm. long-, 



Text-fig'ure 25. 



12 3 45 678 

 K. 



in ';,«,•, !!i'i»\\vi 



M. 



L. 



:; '"'n. 



c. 



/ 



The tongue of Macacus rhesus. 



and has 8 laminae and 9 sulci. The right organ is 1'2 cm. long, 

 and has 11 laminae and 12 sulci. At each end of each organ 

 there are small folds of mucosa, 



The Frenal Lamella. 

 The triangular lamella has a bifid apex, and the upper surface 

 of the free part is devoid of sulci. The edges, which extend 

 postero-laterally as far as the anterior limits of the lateral organs, 

 are plain anteriorly and tuberculated posteriorly. 



21* 



