172 ANATOMY OF THE SALIVARY GLANDS IN THE CAENIVORA 



ridge opposite the second molar tooth. Inferior alveobuccal glands are 

 present ; the caudal end of the series (i6) ascends at the border of the 

 masseter above the level of the angulus oris, and approaches the 

 parotid duct, which, however, is not embedded in the mass. The 

 subma.xillary gland {20) also is large, its structure firm, its lobules 

 sharply defined inside the dense capsule. It is reniform in shape, with 

 its long axis nearly vertical. The duct (21) emerges from the concavity 

 of the cranial border, turns over the digastric muscle to reach the dorsal 

 surface of the mylohyoid, and continues horizontally to its orifice upon 

 the caruncula sahvaris close to the symphysis. The greater subUngual 

 gland (2j) closely resembles that of the cat, but is somewhat smaller 

 relatively and for the most part mesal to the digastric muscle ; the 

 lateral margin is in contact with the submaxillary only at its upper 

 pole. The lesser subhnguals (18) are well developed and form an 

 elongated mass dorsal to the ducts of the submaxillary and greater sub- 

 lingual glands. They extend into the arcus palatinus and are continu- 

 ous with the isthmian glands. 



PROCYON LOTOR 



(Morphological Museum of Princeton University, No. 221.) In 

 the raccoon the parotid is quadrangular and very large (Fig. 9), ex- 

 tending forward on the masseter, and behind over the trapezius 

 ai^ecia-P'^'^lo'^'^'"^^'''^^^* muscles. Its lower margin is prolonged 

 to' '''T3&ver and almost conceal the submaxillary. In our illus- 

 tration it has been reflected sHghtly to expose this gland. The duct 

 (2) emerges from its cranial border, nearer the ventral than the dorsal 

 angle. It ascends slightly on the surface of the masseter, crosses its 

 sloping border and opens at the end of the stomal ridge, opposite the 

 second cusp of the first upper molar tooth. Into the promasseteric 

 portion of the duct opens an orbitoparotid (8), the body of which has an 

 inframuscular position, following the sloping border of the masseter as 

 far as the mandibular ramus. The orifice of its duct corresponds to 

 one of the sites of orbitoparotid sprouts in embryos of the cat, and 

 the body to the direction of its growth, which often follows the parotid 

 duct along the border of the muscle. For these reasons I have no 

 hestitation in interpreting this element as an orbitoparotid, and hold 



