860 



DE. C. F. SONNTAG O'S THE VISCERAL ANATOMY 



nerves into the small glands (text-fig. 78, sgn). The ducts do not 

 open on frenal lamellae as in the Primates. 



One must be careful not to confuse the submaxillary glands 

 with the cervical lobes of the thymus gland, and histological 

 examination must be carried out in doubtful cases. 



The Sublingual Glands of many Marsupials have already been 

 described, and Oppel (8) has collected the variovis observations. 



In Dendrolagus ursinus they are long, thin, and narrow, and 

 resemble those of D. dorianus already described by Oarlsson (2). 



" Text-figure 73. 



Tlie neck of Petaurtis scmreus. Letters as in text-fig. 71. 



Osgood (9) described large round glands in Ccenolestes obscurus. 

 Those of Perameles obesula are oval and do not extend so far 

 forwards. Posteriorly they are in contact with the submaxillaries. 

 The submaxillaries are large and the sublinguals small in 

 P. obesula, but the conditions are reversed relatively in 

 C. obscurihs. 



When the total bulk of the salivary glands of each Marsupial 

 are compared, it is seen that Dendrolagus has the largest mass. 

 And they conceal large areas of the muscles in the vicinity of the 

 hyoid bone. 



