OF THE TONGUES OF THE MAMMALIA. 29 



10. Only Man and the Orang have the Apical Gland of Nuhn. 



11. The tongue of the Orang resembles that of Man more 

 closely than any other one does, and the tongue of the Bornean 

 Gibbon resembles, in many ways, those of the Cercopitheques, 

 which will be described in my next paper. 



Bibliography. 



The numbers included in round brackets correspond with those 

 in Professor Arthur Keith's " Introduction to the Study of the 

 Anthropoid Apes" (Natural Science, vol. ix. 1896, Kep. 1897). 

 Those included in square brackets refer to the following papers 

 not mentioned by Professor Keith : — 



1. MtiKCH.— Morphol. Arbeiten, Bel. 6, pp. 605-690. 1896. 



2. Boulabt &, Pilliet. — Journ. de l'Anat. et de la Physiologie, 



Paris, 1885, p. 337. 



[I was unable to see the characters of the part of the frenum 

 running between the inferior surface of the f renal lamella and 

 the floor of the mouth in the specimens in which I have not 

 specifically described this part.] 



