PLATE I. 



Fig. 



1. Diphyes dispar, complete. 



1 a. An anterior view of the distal end of its proximal nectocalyx. 

 1 6. A lateral view of the distal nectocalyx. 

 1 c. A posterior view of the same object. 

 1 d. A young proximal nectocalyx. 



1 e. A polypite, with its hydrophyllium and tentacles, much magnified. 



2. Biphjes appendiculafa, complete. 



2 a. A front view of the distal end of its proximal nectocalyx. 



2 ^. A posterior view of its distal nectocalyx; the bristle {ff) is supposed to 

 be passed through the hydrcecial canal. 



2 c. The hydrophyllium of the same species. 



3. Diphi/es Chamissonis ? a lateral view of the proximal nectocalyx. 



3 a. An enlarged view of the distal end of this nectocalyx. 



3 b. The hydrophyllium. 



4. Bvphyes mitra ? a lateral view of the proximal nectocalyx. 



4 «. A front view of the same. 



4 ^. A polypite, with a gonophore, and a possibly imperfect hydrophylhum. 



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