Plate IX. 



Fin. 22. Tubularia indivisa. 



A. Natural size. 



B. Hydranth with gonophores (About 1 /6 usual magnification ). 



Fig. 23. Tubularia larynx. 



A. Natural size. 



B. Hydranth and gonophores. 



C. Young hydranth. 



D. Abnormal hydranth. 



