OF THE TONGUES OF THE MAMMALIA, 



127 



upper limit may be bordered with conical papillae or lymphoid 

 nodules. Both organs may be identical in size, but there may be 

 disparities in size, distinctness, and number of ridges and fissures. 



SPOTTED CAVY 



BALD-HEADED 

 OUAKARI 



Text-figure 16. 



//// 



RHESUS 

 MACAQUE 



and 



COMMON 

 MACAQUE 



WHITE-COLLARED 

 MANGA BEY 



WHITE-FRONTED 

 CAPUCHIN 



BLACK HOWLER 

 MONKEY 



MOLOCH 

 TEE TEE 



RED-FRONTED 

 LEMUR 



RING-TAJ LEO 

 LEMUR 



The difterent forms of lateral 



NEGRO 

 TAMARIN 



Details in text. 



0 0^ 



TANTALUS 

 CERCOP.'THEQUE 



To sum up, the lateral organs may consist of : — 



A. Fissures and flat Iamina3, as in the Spotted Cavy. 



B. Fissures and protruding laminae, as in the Macaques and 



Mangabeys. 



C. Definite organs, as in the Ring-tailed Lemur, Kabbit, etc. 

 These organs are richly supplied with taste-buds. 



The Lymphoid Tissue and Glands. 



Several papers dealing with the glands of the tongue have been 

 written by J. B. Haller * and others. I will not, therefore, enter 

 into a description here, but I will refer to it in the systematic 

 papers. I will only point out here that the orifices of glands are 

 not visible in all tongues, even when the tongue is examined with 

 the hand lens. 



The Inferior Surface. 



The inferior surface presents for examination a papillary 

 border, a mesial furrow or ridge, a frenum, the openings of the 

 sublingual glands, and the sublingual plate or its remnant the 

 plicae fimbriatas. 



The papillary border of the tongue may run completely round 

 it, or it may be broken at the apex. Its antero-posterior length 



* Haller, J. B., Archiv fiir Mik. Anat. 1909, p. 368. 



