3l6 SALIVARY GLANDS IN MARSUPIALS, INSECTIVORES, RODENTS 



2 . A group of superior alveobuccal or molar glands (4) begins caudad 

 of the parotid duct terminal and arches around the angle of the 

 mouth, without being prolonged into an inferior alveobuccal series 

 (cf . the disposition of the alveobuccal glands shown in Canis familiaris, 

 in Fig. 7, and Taxidea americana, Fig. 12, Part V). 



3. The submaxillary gland (/) occupies the usual retro- and sub- 

 mandibular position of the carnivore and is divided into several 

 larger lobules. The duct (j) is simple throughout and opens by an 

 independent parafrenular orifice. 



4. The greater sublingual gland (2) is a small polyhedral mass em- 

 bedded in the ventrocephalic border of the subma.xillary gland . The duct, 

 carrying two minute glandular sprouts, crosses to the dorsal border of 

 the submaxillary duct and then continues, in company with the same, 

 to the plica subhnguaUs, under cover of the lesser sublingual glands. 



5. The lesser subhngual glands (j) form a narrow uniform band 

 extending from the s>Tnphysis menti caudad. across the lateral aspect 

 of the submaxillary and greater sublingual ducts, and arching thence 

 dorsomesad into the ventral palatine arch. 



Fig. 2. Pet.\uroides Vol.ans — Flying Ph.\langer. 

 Columbia University Morphological Museum, No. 2141. 



1. The parotid gland {^a, 56) has an oblong, expanded form and is 

 situated entirely in the subauricular and cerv-ical region. The slightly 

 reduced terminal portion fills the triangular interval between the ster- 

 nomastoid, pectoral, and cephalohumeral muscles. The duct ascends 

 obliquely to its termination. 



2. The submaxillary (/) forms a small compact mass fitted into the 

 recess between sternomastoid, digastric, and the infrahyoid muscles, 

 along the cephalic margin of the parotid. The duct is simple. 



3. A small narrow band of lesser sublingual glands (j) overlies the 

 lateral aspect of the submaxillary duct near its termination. 



INSECTIVORA 



Fig. 3. Pteropus Scapulatus — Fox Bat. 

 Columbia University Morphological Museum, No. 2002. 



I. The parotid gland (5) lies entirely retromasseteric. The dorsal 

 border is fitted around the external auditory meatus. Ventrad the 



