SALIVARY GLANDS OF MAMMALS. 405 



In the Aye-aye the parotid, of a sub triangular flattened form, 

 extends from its usual position to beneath the mandible where it 

 is in contact with the submaxillary gland. The duct leaves the 

 parotid about three lines above the lower margin of the mandible, 



Salivary glands of Dog. iv' 



crosses the masseter, and penetrates the buccal membrane close to 

 the angle of the mouth. The submaxillary is smaller, thicker, 

 more globose and compact in texture. 1 These forms and propor- 

 tions of the two main salivary glands obtain in all Lemuridce : in 

 Stenops the authors of cxxiv" describe and figure 2 the ducts of 

 the submaxillaries as uniting, beneath the middle of the tongue, 

 into a common duct which passes backward to terminate upon 

 the mucous membrane of the mouth a little above the hyoid. 

 In the Potto the submaxillary ducts open in the usual position, 

 upon the free margin of the sublingual. In the higher Quad- 

 rumana the salivary system accords, in the main, with that in 

 Man. The situation of the submaxillary agrees with the name of 

 the gland. The buccal follicles are more numerous in the cheek- 

 pouched monkeys, and the parotids are relatively larger in the 

 more exclusive vegetarians. 



The human parotid is a depressed, three-sided pyramid : its 

 base forms the exterior surface, and the apex sinks deep to the 

 stylo-hyal and its muscles, penetrating between them and the 

 internal pterygoid muscle, as far as the pharynx. A dense fascia 

 separates it from the submaxillary : that which covers its base is 

 called i parotid fascia : ' and the gland is attached by similar 

 tissue, posteriorly, to the cartilage of the meatus auditorius. A 

 portion of the gland which extends from the part overlapping 



1 en', p. 43. 2 p. 52, pi. i, fig. 5. 



