ABBREVIATIONS. 



Orifice of hypophyseal duct. 



Peripharyngeal band. 



Phosphorescent organ. 



Right lobe of stomach. 



Branchial stigmata. 



Duct of subgangliouic gland. 



Stolon. 



Bud still attached to stolon. 



Subgangliouic gland. 



Test. 



Atrial tentacle. 



Tail. 



Ventral tentacle of branchial circle. 



