188 



METAZOAN PHYLA 



Lophophore 



Ay/cc//arr/uf77, 



JOWS 



c/oseaf 



Musc/e to 

 boc/y wa// 



Ovary 

 Stomcrch 

 Fu/^/cu/l/s 

 Testes 



Esop/iagras 



^// v/cu/af/uf^, 

 Jaw3 ope^ 



- /Vfasc/e ta 

 boc^y wa// 



5-f-orvach 



Fui^/'cc//us 

 Testes 



Fig. 96. — Bugula avicularia (Pallas), a European species. Two zooids are shown, the 

 one at the left entire, that at the right turned 90 degrees to the first and sectioned. Two 

 avicularia are shown, one with the jaws closed and the other with them open. An ooecium 

 is also included in the figure. {Redrawn from Parker and Haswell, "Text-book of Zoology," 

 somewhat modified.) Much magnified. 



Lophophofe 



Ovary, 

 Stomach 



Sta-f-ob/asis 



Fig. 97. — Fresh-water bryozoans. A, colony of Plumatella sp., growing on a frag- 

 ment of a small branch of a tree. About natural size. B, several zooids of a colony of 

 Plumatella rcpens (Linnaeus), a European species. (From Allman, "Monograph of Fresh- 

 water Polyzoa.") Highly magnified. 



