AND MYOLOGY OF THE MAESUPIALIA. 



8G1 



I have nothing new to add to our knowledge of the arterial 

 supply and venous drainage of the salivary glands. And I could 

 not detect any connection between them and the anterior cervical 

 lymphatic glands. 



Text-figure 74. 



The neck of Deiidrolagus ursinus (A) and the cervical thymus B. n, o, cutaneous 

 branches of the cervical plexus ; p. trapezius ; q. common carotid artciy. 

 Other letters as in text-fia-. 71. 



The Aliriientary Canal. 



The (Esophagus : — The mucosa of the abdominal part exhibits 

 transverse rugsB in Didelphys, but in no other genus. 



The Stomach : — The form depends on the degree of distension, 

 but tne latter is not stated in all existing accounts. Owen 

 described a globular stomach in several species, but I found that 

 the empty stomach is more or less triangular in a, number of 

 Polyprotodonts. 



In Perameles ohesihla (text-lig. 75 B) the empty stomnch is tri- 



