PLATE II. 



Fig. 



1 . Ahyla bassensis, complete ; a lateral view. 



1 a. The same, so placed as to show the posterior side of the distal nectocalyx. 

 I b. The proximal nectocalyx from in front and above. 



1 c. The polypite, with its hydrophyllium. 



2. Abyla pentagona, complete ; a lateral view. 



2 a. The distal nectocalyx from behind. 



2 b. The proximal nectocalyx enlarged, from one side. 



2 c. A young distal nectocalyx of the same. 



2 «/. A polypite, with its hydrophyllium and a gonophore. 



2 e. The hydrophyllium detached. 



3. Abyla Voytii, the proximal nectocalyx ; an antero-lateral view. 



3 a. The same ; a postero-lateral view. 



3 (5. A polypite, with its hydrophyllium and gonocalyx. 

 3 c. A young gonophore magnified; 



