76 SALIVARY GLANDS OF LOWER PRIMATES 



which advances along the dorsmedial aspect of the main submaxil- 

 lary duct and, after a longer or shorter independent course, unites 

 with the same before the plica subhngualis is reached. 



This gland and duct is of considerable importance on account of the 

 close topographical resemblance to the retrolingual gland described 

 by Ranvier in the lower mammalia, in those forms in which the retro- 

 lingual and submaxillary ducts unite prior to reaching a common ori- 

 fice on the pUca sublingualis (cf. infra, page 91). 



2. GREATER SUBUNGUAL GLAND AND DUCT (DUCT OF BARTHOLIN). GLAN- 

 DULA ET DUCTUS SUBLINGUALIS MAJOR, B.N.A. GLANDULA SUB- 

 LINGUALIS MONOSTOMATICA, ILLING 



These terms denote the inconstant component of the intermandibular 

 complex which appears in certain forms as a distinct gland, interme- 

 diate between the submaxillary duct with its adnexa and the lateral 

 group of the lesser sublingual glands, and whose duct either unites 

 with the terminal of the submaxillary duct or else opens on the plica 

 subUnguaUs by a separate orifice caudolateral to the submaxillary 

 opening. 



3. LESSER SUBLINGUAL GROUP 



(a) Lesser sublingual glands and duds proper (ducts of Rivini) 

 situated in the lateral division of the alveolingual field : 



(Glandulce et) ductus sublinguales minores, B.N.A. 

 Glandula sublingualis polyslomatica, Illing. 

 Glandulce alveololinguales, Chievitz. 



The term alveololingual glands, first applied by Chievitz to the group 

 of separate salivary glands occupying the lateral district of the entire 

 area between border of tongue and mandibular alveolus, appears in the 

 modern literature of the salivary glands as the most generally accepted 

 designation of these structures, the somewhat awkward term of 

 "alveololingual" being replaced by the concentration "alveolingual." 

 It has the theoretical disadvantage of selecting one of the three 

 components of the entire alveolingual salivary area and of distin- 

 guishing the same by a name properly belonging to the whole region 

 of the oral floor, bounded mesally by the sulcus lingualis and 

 laterally by the sulcus alveolaris. This region contains in the adult 



