OF THE TONGUES OF THE MAMMALIA. 



279 



The Circumvcdlate Papillce (text-fig. 16 D), 



Three prominent, circular, vallate jjapillse form an isosceles 

 ti'iangle whose acute vertical angle is directed backwards. All 

 are bluish-black in colour, granular, and' have white secondary 

 papillae at their anterior poles. All the fossae (text-fig. 16 D, e) 

 and valhims are well-marked, and the posterior vallum is coarsely 

 nodulated (text-fig. 16 D, 6 and c). 



The vallate triangle contains several large conical papillre, and 

 a lai'ge fungiform papilla bisects the base. 



Text-fio-nre 16. 



The tongue of Preshytes cepliaJopterus. 



A. Dorsum ; B. Inferior surface ; C. Lateral organs ; D. and E. Plan and elevation 

 of the posterior vallate papilla (a. anterior part ; d. main part). Other letters 

 in the text. 



Tfte Fungiform Papillce. 

 The fungiform papillfe form a dorsal bounding zone on which 

 they have the usual ari-angement in clusters and rows, but they 

 have not got the usual distribution according to size. The 



