46 



PHYLUM TUNIC ATA (UROCHORDA). 







Emb 



J 



FIG. 38. a sexual, & asexual form of Saipa (Thalia) democratica-miicronata (from Clans). 

 mouth ; A atrial aperture ; N ganglion ; Br gill ; End endostyle ; Wg ciliated pit ; Ma 

 mantle ; .V nucleus ; C heart ; Emb embryo ; st.p stolon. 



w 



I- ni. 39. a Himl c-nd nt Sul/m democratica, ventral view. St.p stolon; iVw nucleus, b Ter- 

 minal part (it stolon lyuiiiin chain) nia^niliril. o mouth ; A atrial aperture ; A T ganglion,'; 

 ll'i/ ciliated pit ; II / peripharyngeal band ; End endostyle ; Af anus ; Br gill ; ^Vw nucleus 



ilr nvar\ ; (' heart (Irnin Clans). 



