746 DK. C. F. SONNTAG OX TilE COMPARATIVE ANATOMY 



the tongue. The frenal lamellse, which are sometimes complex^ 

 have the following charactei'S : — 



1. L. catta : Inmelhe are two blunt rounded pi^ocesses. 



2. L. coronatus : lamellae form a parallel-sided flap. 



3. L. macaco : triangular with rounded apex and lobulated 

 sides, ■ 



4. L, varius : two broad flaps with rounded anterior borders 

 and sharply cut mesial borders. 



5. L. onongorj : lamellae form a parallel-sided flap. 



The tongues of the species of Lemur resemble those of the 

 Chimpanzee and Gibbons in the following respects : — 



1. Several vallate papillsG form a Y. 



2. The conical papillae on the pharyngeal part of the tongue 

 are much larger than those on the oral part. 



3. The lateral organs are situated at the posterior parts of 

 the lateral borders and are convex towards the lateral vallate 

 papilla?. 



The tongues difier from those of the Orang-Outan and Man^ 

 Avhich have no large conical papillae on the pharyngeal part of 

 the tongue, and the vallate papilke. form a V. These also have 

 the Apical Gland of ISTuhn. 



They differ from those of the Gorilla and Orang-Outan, whose 

 lateral organs form ladder-like patterns on the dorsum. 



Genus MiCROCEBUs. 

 Smith's Dwarf Lemur {M. murimis). 



Three vallate papillae form a triangle with the base anterior ; 

 the basal papillfe are small and circular, but the apical papilla i& 

 large, round, and granular. 



The conical papillfe increase in size from the apex of the 

 tongue to the epiglottis, and those on the base are not dispro- 

 portionately large as in Lemur and Hajmlemiir. 



Lateral organs are absent. 



The sublingua is a flat horny plate witli a row of denticles on 

 its anterior border. 



One can see, therefoi-e, that there is no resemblance in any of 

 the essential points between the tongues of T^emur and Micro- 

 cebus, but the latter i-esemble those of some of the Lorises^ 

 Galagos, and Pottos, desci-ibed below. 



Family Indrisid.e. 



Genus Indris. 



Flower (4) described the tongue of J. hrevicaudatus as 

 follows : — " The tongue is long and narrow, with an obtuse 

 point at the apex, being less truncated than in Lemur. It i& 



