SALIVARY GLANDS OF LOWER PRIMATES 91 



maxillary duct. The duct of the gland (j') runs forward along the 

 dorsal border of the main submaxillary duct and unites with it shortly 

 before the papilla is reached in a common terminal segment (7) with 

 single opening of the caruncle. 



(b) The lesser sublingual group (j) extends from the papilla caudad 

 to just beyond the lingual intersection, along the ventral and lateral 

 border of the submaxillary duct. 



4. ATELES sp. ? (probably A. niger) 

 Columbia University Morphological Museum, No. 2006, 



Fig. II 



A. PAROTID G-) 



The cephalic border of the trapezoidal-shaped gland is concave and 

 fitted around the caudal circumference of the external auditory meatus. 

 The ventrocephalic angle and adjacent portion of the ventral margin 

 is prolonged forward on the duct. 



Two small accessory glandular nodules (6) connect with the main 

 duct about midway between the point of its emergence from the gland 

 and the buccal papilla (5) . 



B. INTERMANDIBVLAR COMPLEX 



This is more complicated than in any of the preceding forms, but of 

 great interest because it comprises, in the single individual, repre- 

 sentatives of all components which have been encountered in the species 

 previously described. 



(a) Submaxillary Gland 



1. Main gland (/). Below and behind the mylohyoid (/o) com- 

 posed of one larger and three smaller lobes. 



2. Accessory submaxillary gland (i"). A small gland belonging to 

 this group enters the main submaxillary duct by a short canal just 

 after the latter has crossed the caudal margin of the mylohyoid (10). 



3. Secondary submaxillary gland and duct (/')• — The small globular 

 gland is situated in the identical position which the corresponding 

 structure occupies in Lagothrix (Fig. 10), viz. caudal to the lingual 

 nerve (zj), between it -and the accessory submaxillary gland (/"), 

 and dorsal to the main submaxillary duct (/). Its duct passes on the 

 mesal aspect of the hngual nerve (/j) and of the caudal end of the lesser 



