ANATOMY OF THE SALIVARY GLANDS IN THE CARNIVORA 



1S7 



cular in position, draining into the parotid duct. The grounds for 

 regarding this element as intermechate between the parotid and the 

 orbital series have already been stated, from which it follows that 

 the glands opening upon the stomal ridge are to be regarded phyleti- 

 call)' as a single series, secondarily divided in mammals by the suppres- 

 sion of its intermediate portion, of which the variable orbitoparotid 

 is representative. The modifying factor is the masseter, in relation 

 to which the series resolves itself into an ectomasseteric element, the 



Fig. 19. Schema of the salivary glands in fissipede carnivores. The constant 

 elements are shown solid, the variants in outline. 



parotid, entomasseteric elements, the orbital series, and promasseteric 

 elements, orbitoparotids. The last, when well developed, tend to 

 escape from their confinement along the border of the masseter, 

 following the line taken by the parotid sprout ; they may retain the 

 intramuscular position (Procyon) or acquire a position on the lateral 

 surface of the muscle near its ventral border (Gulo). 



The diagram (Fig. 19) is intended to express graphically these 

 conclusions as to the composition of the hssipede carnivore salivary 

 complex. The constant elements are represented in sohd black, 



