OP THE TONGUES OF THE MAMMALIA. 291 



The Fungiform Papillce. 



The fungiform papillae stretch right across the dorsum, but 

 have the usual arrangement in clusters and rows. 



All of them have granular surfaces and are hemispherical, 

 bossed or collared. Those which are included within the vallate 

 area may be mistaken for vallate papillae, but a careful examina- 

 tion reveals the absence of fossae and Valiums. 



There is a variable amount of overlapping or concealment by 

 long conical papillae (text-fig. 21 M, i), especially in the case of 

 the fungiform papillae within the vallate triangle where the 

 conical papillae form prominent processes. 



The Conical Papillce (text- fig. 21 L & M). 



The conical papillae have the usual arrangement in clusters and 

 rows, and their disposition according to size takes the usual form. 

 Their points, however, face in all directions. 



Most of them are filiform and make the dorsum shaggy, but 

 not to such an extent as in G. cethiops. The points form rows, 

 and between them one can see strips of interpapillary dorsum 

 (text-fig. 21 D &, E). The number of points to each papilla 

 varies greatly from one to a brushwork. 



The Lateral Organs (text-fig. 21 J, a, b, c, & K). 

 The appearance presented by the lateral organs differs greatly 

 from those of G. preussi and C. burnetii. The sulci are wide, so 

 the laminae, which are small and rounded, appear like a row of 

 small oval bodies. Each lamina is traversed from without 

 inwards by a broad, shallow, secondary sulcus, and a row of 

 conical papillae runs backwards and inwards across the dorsum 

 from the inner end of each ridge. The measurements, etc., are 

 given as follows : — 



Organ. Length. 



Right 1-25 cm. 



Left 1-5 „ 



The organs may appear as straight rows or curved lines (text- 

 fig. 21 J, b & c). 



The Frenal Lamella (text-fig. 21 B & ; 20 G). 

 The apex is bifid, and the halves taper from a broad base. The 

 plain edges run postero-laterally to the level of the middle of the 

 lateral organs. The points are rounded or sharp, and may or may 

 not be equal in size. 



Plicce Fimbriates (text-fig. 21 B & C a). 



Plicae are absent in all my adult specimens, but are present in 



the young one, so they may disappear as age advances. They begin 



anteriorly at the level of the apex of the free part of the frenal 



lamella, and run postex^o-laterally for l - 8 cm. The mucosa 



