750 DR. C. F. SONNTAG ON THE COMPARATIVE ANATOMY 



serrations and tAie degree of mobility is equal to that which 

 exists in JS'ycticehus and Loris (text-fig. 69). 



Nussbaum (11) pointed out that the sublingua has a rod-like 

 core, which he termed the " lyssa of the sublingua." It has a 

 connective-tissue sheath and consists of fat, cartilage, and 

 connective tissue. It is connected above to the lyssa of the 

 tongu'^ which contains fat, connective tissue, and mviscle fibres. 



The frenal lamellae are two conical processes whose crenated 

 edges extend postero-laterally almost as far as the palato-glosaal 

 folds. 



The median ventral sulcus has no crest, but receives the 

 prominent median dorsal ridge on the sublingua. 



Family Galagid.^. 



Genus Galago. 

 The Bushy-tailed Galago (G. crassicaudata). Mus. R.C.8. 



The tongue was preserved, so no measurements were made. 



Three vallate papillse are arranged in the form of an isosceles 

 triangle with long sides. They are large, oval, and excavated, 

 the fossae are patulous, and the Valiums appear as clear zones. 

 The basal pair are opposite the attachments of the palato-glossal 

 folds. Flower (4) also recorded three papillae in the form of a 

 triangle. 



The fungiform papillae are small, rounded, and arranged in the 

 usual manner. 



The conical papillae increase in size from before-backwards, 

 and there is no sharp line of contrast between those on the oral 

 and those on the pharyngeal parts of the tongue as in Lemur and 

 Hapalemur. Flower states that they are thick on the base of 

 the tongue. They have denticulated points directed backwards. 



Tlie lateral organs are absent, the mesial ventral sulcus has no 

 crest, and the ventral papillary zone has no fungiform papillae. 



The sublingua (text-fig. 69), which is flat, horny, and tongue- 

 shaped, has a rounded anterior border bearing sixteen squat 

 sharp-pointed denticles. It covers rather more than half of the 

 width of the under surface of the tongue and half of the length 

 of the free part between the apex and frenum. The sides are 

 parallel and entire. Flower's specimen had uptvu^ned edges and 

 a downwardly-directed apex which adapted its form to that of 

 the under surface of the tongue. 



Genus Hemigalago. 



Demidoff's Hemigalago .(^. demidoffi). 



The small conical tongues of both my specimens have tlu-ee 

 vallate papillae arranged in the form of a triangle with the apex 



