Bic, 20. 
BryozoA All but B and C from endoproctans. A. Diagram of the 
nervous system and sense cells of Loxosoma. Harmer. B. Longi- 
tudinal section of an estoproctan bryozoan from Delage and Her- 
ouard. The position of the ganglion is shown by a black area. ©. 
An avicularian from Bugula showing ganglion after Ladewig. D. 
Pedicellina showing location of ganglion. E. Ganglion of Pedicellina. 
Nitsche. F. Diagram of sense cells in surface of tentacle of Pedi- 
cellina. Retzius. 
