416 



TUNICATA. 



tinguished (Fig. 207). One of these (st) is directly connected with 

 the follicle and consists of a single row of cells (the so-called stalk 



FIG. 207. Female genital apparatus, A, of Salpa pinnata (after SALENSKY) ; B, of 

 Salpa virgula (after TODARO). a, epithelium lining peribranchial sac (atrium) of 

 parent animal ; b, blood-sinus ; e, egg-cell ; em, embryonic chamber ; ep, epithelial 

 prominence ; /, follicle ; m, aperture of the oviduct ; od, distal dilated part of the 

 oviduct ; ov, ovarian chamber ; s, process of the embryonic chamber ; st, narrowed 

 part of the oviduct (so-called stalk of the follicle). 



of the follicle) and the other is a dilated efferent portion (od), with 

 a distinct lumen. The egg-follicle lies at the base and to the right 



