SALIVARY GLANDS IN MARSUPIALS, INSECTIVORES, RODENTS 323 



2. The submaxillary gland (/) lies below and behind the mandible, 

 largely under cover of the mesal surface of the parotid gland. Its 

 simple duct, covered in the normal position by the caudal border of 

 the lesser sublingual mass, and crossed obliquely by the lingual nerve, 

 courses forward to the parafrenular opening. 



3. The lesser sublingual group (j) is exposed in Fig. ii by resection 

 of the body of the mandible, and is formed by a densely crowded 

 mass of individual glands which extends from the plica sublingualis 

 caudad, crossed on its lateral aspect by the lingual nerve, and then 

 turns dorsomesad, under cover of mandibular ramus and internal 

 pterygoid muscle, into the anterior palatine arch and the soft palate. 



Fig. 12. Bos Taurus^ Calf. 

 Columbia University Morphological Museum, No. 2154. 



The preparation shows the superficial exposure of parotid gland 

 and duct (5). 



The elongated group of the upper and lower alveobuccal glands 

 {4, f) are fully developed. 



Fig. 13. Equus Caballus — Horse. 

 After a fresh dissection. 



The vertically elongated parotid (5) is divided by incisures into four 

 main lobes. 



The duct arches mesad of the prolonged mandibular angle, emerg- 

 ing at the ventral margin of the masseter, along which it ascends to 

 its point of engagement in the buccinator. The submaxillary gland (j) 

 is relatively small, is placed largely under cover of the caudal portion 

 of the parotid, but does not project beyond its dorsal margin. 



ANNOTATIONS OF LEADERS IN ALL FIGURES 



/. Subma.xillary gland and duct. 



i" Accessory submaxillary gland. 



la. Left submaxillary gland. 



ih. Right subma.xillary gland. 



2. Greater sublingual gland and duct. 



J. Lesser sublingual glands and ducts. 



4. Superior alveobuccal or molar glands. 



4a. Superior alveobuccal or molar duct. 



