146 



DR. E. LoNXBEItG ON TUE 



[Feb. 20, 



part. Towards the sides they are more numerous, 4 ram. apart. 

 At the margin they are still closer, 3 mm. or less apart, and on 

 the lower side of the tip of the tongue they are separated by inter- 

 spaces not even measuriug 2 mm. Anteriorly, the diameter of the 

 papilla > fungiformes is 1 mm. or not quite that, but they increase 

 in size posteriorly, so that the diameter of those in the groove 

 measures \h mm. 



Tig. 3. 



ToDgue of tbe Musk-ox. 



The posterior thick portion of the tongue is covered by large, 

 horny, scale-like papillae. They are 2 (2|) mm. broad "in the 

 median region, but their size diminishes towards the sides, where 

 they measure only about 1 mm. These are homologous with the 

 small papillae on the anterior portion of the tongue, but are 

 rounded instead of pointed. The lateral surface of the posterior 

 portion of the tongue is beset with minute and conical papilla 

 filiformes. Laterally, and on the posterior two-thirds of the centra] 

 region of the hind tongue, rather large papilla fungiformes are 



