OF THE TONGUES OF THE MAMMALIA. 



499 



The Conical Papllke (text-fig. 38 A, B, & G).— Although they 

 have the usual distribution according to size, and theiv points 

 run in the usual directions, they are irregular in arrangement on 

 the oral part of the dorsum. They are disposed in oblique chains 

 on the base of the tongue. This lack of definite arrangement in 

 clusters and rows on the oral part of the dorsum is very common 

 on the tongues of the Cebidse, and rare in the Cercopithecidte. 

 On the lateral borders and inferior surface they are a ery closely 

 aggregated, but have no definite arrangement. 



They are filiform or cylindrical, and haye one or more points. 



LymjjJioid Tissue and Glands (text-fig. 38 A, a). — The base of 

 the tongue is covered with nodules, or is delimited by a crescentic 

 zone of elevations. A few orifices of ducts and pits are present. 



Text-fisuve 38. 



^mn^ 



AfTA.^! /^ . 



The tongue of Cebicsfaiitellus. 



The Lateral Organs (text-figs. 38 D and 39 B & C).— The 

 tippearances vary greatly in difterent examples. They may form 

 concave bodies on the sides aird dorsum (text-fig, 38 D), convex 

 bodies on the sides and dorsum (text-fig. 39 B), or long rows of 

 laminfB and sulci on the inferior surface (text-fig. 39 C); the 

 concavities or convexities face the lateral vallate papilh'e (l.v.p.). 

 The lamina are rounded or pointed, and many are traversed by 



