PLATE III. 



Mesenchytrceus veg<z sp. nov. 



FIG. I. The spermathecal apparatus. A part of one of the spermathecse is 

 not figured. The spermathecse are connected with the intestine by 

 a narrow duct. 



2. A transverse section of the body passing through the penial bulb, 

 atrium, atrial glands, and sperm-duct. One atrial gland is seen to 

 enter the atrium. There are twelve to fourteen ducts of atrial glands 

 leading into the atrium, each duct being surrounded by circular 

 muscles. 



