Fig-- 1^". 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. o. 

 An avicularian from Biigida showing ganglion after Ladewig. I). 

 Pedio'llhia showing location of ganglion. E. Ganglion of Pedicellina. 

 Nitsche. F. Diagram of sense cells in surface of tentacle of Pedi- 

 cellina. Retzius. 



