46 



UNITED STATES NATIONAL MUSEUM BULLETIN 251 



style and ventral terminal of stigmatal rows. Ciliated groove a mi- 

 nute oval opening ; about 30 very long tentacles. Dorsal languets dis- 

 placed to left side of dorsomedian line for distance of about two 

 stigmata. No papilla on horizontal membranes along transverse ves- 

 sels. Anus bilobed, opens at level of seventh or eighth transverse ves- 

 sel. Stomach smooth- walled, located in anterior part of abdomen; 



Figure 13. — Aplidiopsis amoyense, new species: a, mushroom-shaped colony; b, right side 

 of thorax; c, right side of abdomen and postabdomen of same zooid; d, upper side of 

 lateral hemisphere of the spherical colony; <?, section of same colony. 



