498 



DR. C. F. SONNTAG ON THE ANATOMY 



Se\^eral forms of pigmentation are shown diagrammatically in 

 text-fig. 37, but the descriptions are given with each species. 



Text-figure 37. 



Patterns of pigmentation of tlie tongue : A. dorsum ; R. inferior surface. 



Genus Cebus. 



The Brown Gafvohin {C. fatttellus). 



The largest of three specimens exhibited the following measure- 

 nnents: — total length 5-45 cm.; length of the oval part 3-9 cm. ; 

 length of the pharyngeal part 1-55 cm.; width between the 

 lingual attachments of the palato-glossal folds 2-1 cm. 



The Circumvallate Papillce.— Specimen No. 1 (text-fig. 38 A, E,. 

 & F). — Three papillfe form an isosceles triangle with the apox 

 behind. Each lies in the centre of a low, flat, circular elevation 

 which is crowded with small cylindrical conical papilla-. Only a 

 small part of each papilla projects beyond tlie vallum. The basal 

 papilla is level with the lamina? of the posterior lialf of its corre- 

 sponding lateral organ. Specimen No. 2 (text-fig. 39 A). — Five 

 vallate papilla? form a V. The anterior papilJpe are circular and 

 large, the posterior papilla is large and oval, and the mesial 

 papilla) are small and circular. All are i-ecessed within their 

 well-marked fos'Sie, 



The Fungiform PapiUce (text-fig. 38 A, B, & H).— The papillfe, 

 which have a peai-ly appearance, form a dorsal bounding zone on 

 which they have the usual arrangement in rows and clusters, 

 but the transverse rows extend far forwards at the expense of 

 the apical cluster. On the inferior sui'face there aie two rows — 

 an inner one of closely- set large papillfe, and an outer row of small 

 discrete ones (text-fig. 38 B, h). 



They are hemispherical, flat, or provided with a central eleva- 

 tion, and none are overlapped by conical papilla?. 



