PLATK XXII. 



FIG. 



1. TUBULARIA SIMPLEX, p. 121, Hilt, size. 



1 a. The polypite, magnified. After Alder. 



2. CORYMORPHA NUTANs, p. 127, iiat. size. From a draw- 



ing by the Author. 



2 a. The gonozooid, magnified. After Hodge. 



3. CORYMORPHA NANA, p. 130, magnified. 



3 a. The gonozooid after liberation, magnified. 3 b. A 



group of gonozooids before liberation. 36'. Another 

 group, differently shaped. After Alder. 



