SALIVARY GLANDS OF LOWER PRIMATES 99 



greater sublingual occupied the usual site, embedded on the medial 

 surface of the lesser sublingual. 



SUMMARY 



A comparative study of the salivary structures in the alveolingual 

 area of the individual species above described reveals some interesting 

 facts. For the purpose of such comparison the individual conditions, 

 reduced to schema and, where necessary, transposed for sake of uni- 

 formity to the left side, are shown in the series of outhne drawings, 

 Figs. 14 to 25. 



The material here reported divides itself into the following natural 

 groups and subdivisions : — 



I. Forms in which the greater subhngual gland (2) is not developed 

 and in which the group is represented by only two distinct glands. 



Submaxillary gland (/). 



Lesser sublingual glandular complex (j) . 



These are consequently characterized by a single parafrenular duct 

 orifice, and by the series of separate Rivinian duct openings along 

 the alveohngual ridge. 



(a) Nyctipilhecus trivirgatus (Figs. 8 and 14). Lemur mongoz (Figs. 

 13 and 14). Submaxillary (/) a single large gland with simple duct, 

 without derivatives (/). 



Fig. 14. Schema of alveolingual salivary complex in Nyctipilhecus tritirgatus 

 (Fig. 8) and Lemur mongoz (Fig. 13). 



