SALIVABY GLANDS OF LOWER PRIMATES 89 



(h) Greater sublingual gland (2). — This gland, largely under cover 

 of the lesser sublingual mass, is situated far back, its caudal margin 

 projecting beyond the lingual nerve. The duct follows the main sub- 

 maxillary duct and the common canal {4) formed by its union with 

 the secondary submaxillary duct (/'), and joins the same, as above 

 stated, on the plica sublinguahs. 



(c) The lesser sublingual glands are disposed in the irregular trape- 

 zoid mass characteristic of the Macaques. The greater sublingual 

 gland is placed relatively high, under cover of the caudal part of the 

 lesser sublingual group, and the latter presents only a slight indication 

 of the usual incisure along the ventral margin. 



III. CEBID^ 



I. NYCTIPITHECUS TRIVERGATUS 



Columbia University Morphological Museum, No. 1945, 



Fig. 8 



The salivary apparatus in this species is characterized by enormous 

 development of both parotid and main submaxillary glands. 



A. PAROTID (5) 



The parotid gland (5) is a large multilobular structure which 

 extends from the subauricular region dorsocaudad into the neck and 

 rests on the submaxillary gland. There are no lateral derivatives 

 from the main duct. 



B. INTERMANDIBULAR COMPLEX 



(a) Submaxillary gland (/). — The gland is very large and occupies 

 the hyoid and infrahyoid regions, the organs of the two sides meeting 

 in the ventral midline of the neck for a considerable distance. The 

 submaxillary duct is simple and opens on the caruncle. 



(ft) Greater sublingual gland entirely absent. 



(c) The lesser sublingual glands (j) form a narrow band, whose cau- 

 dal extremity, intersecting the lateral aspect of the submaxillary duct 

 at an acute angle, ascends towards the faucial region, and abuts 

 against a well-developed group of isthmian glands (S), which in turn 

 extend into the soft palate. 



