120 (119) Bud developing within cavity of parental suctorian. Family 

 DISCOPHRYIDAE. 



120 (119) Bud developing externally on parental suctorian. 

 Family PODOPHRYIDAE (also see couplet 116). 



121 (117) Tentacles minute, on surface next to substratum, acting only as 

 organelles of attachment. On appendages of polychaetes. Family 

 PHALACROCLEPTIDAE. 



121 (117) Tentacles used in feeding, and in clusters on superior surface. 

 Family DENDROSOMATIDAE. 



43 



