ANATOMY OF PALUDESTRINA 



177 



development of one main type of cell from the germinal 

 epithelium, viz. oogonia. No traces of nurse-cells could be 

 found. 



The oviduct follows the usual course down the columellar 

 region accompanied by the genital artery. It ultimately 

 becomes thick- walled and convoluted. It gives off in succession 

 a receptaculum se minis and an ovi ducal gland, 



Text-fig. 10. 



Portion of accessory J glands in section, h, darkly-staining area ; 

 I, purple-staining area ; c, cavity continuous with vagina. 



and opens into the vagina close to the entrance of the accessory 

 glands of the latter. In its upper course its walls consist of 

 a single layer of flattish epithelial cells. In the neighbourhood 

 of the kidney its walls are formed of deeper and more columnar 

 cells which contain at their apices (i.e. towards the lumen) 

 a darkish secretion. They are ciliated and covered by an 

 external layer. 



The receptaculum seminis is rather club-shaped 

 and has a short duct. It is surrounded by a muscular layer. 

 The cells are columnar with basal nucleus and their structure 



