354 THE STERNAL GLAND OF DIDELPHYS DIMIDIATA. [June 5, 



smooth appearance and the mouths of the glands were widely 

 dilated. 



In Didel]jhys the skin in this region of the body was much 



Fiff. 1. 



Bidclphys dimidiata. 

 Ventral -view of head and neck, to show the sternal gland. 



Fis. 2. 





■I^K 



Didelphys dimidiata. 

 Sternal gland, more highly magnified. 



wrinkled, and the mouths of the glands were not apparent. This looks 

 very nuich as if the difference were merely due to tlie more contracted 



