Plate II. 



Fig. 2. Corydendrium fruticosum. 



A. Natural size. 



B. Portion of branch showing hydranth 



I'k.. 3. Coryne crassa. 



A. Natural size. 



B. Hydranth with male sporosacs. 



C. Hydranth with female sporosacs. 



Fig. 4. Syncoryne mirabilis. 



A. Natural size. 



B. C. Hydranths with medusa-buds. 



D. Portion of stem to show branching 



E. Young hydranth. 



