EXPLANATION To 1'L.VTK XXVI. 



Fit;. 1. Cluilocarpiis aii/mii ( Allmaii). Hydroi'ladium bearing pliylactocarp aud gouaugia (enlarged). 



2. nuiloi-nr\mx xit/ma. Part of hydrorlailiinn (greatly enlarged). 



3. Cladncarpus miiqiresmin Nuttiug. I'art of liydrocladiiini (enlarged i. 



4. Cla(lt>i-ai-pux i-oiiijirexmis. Hyilrotheca (greatly enlarged). 



5. Cladocarpus compressus. Phylai-to.unniniii (enlarged). 



6. Clnrlucartinis rentrii-osim Alliiiau. Part of uydrorladimn (after Allmau). 



7. Cladocarpus ventricosus. Part of colony showing phylactogouia aud gonaugia (after Allinan ). 



8. Cladocurpii* n-Htriciimis. (ionanginni (after Allman). 



9. Cladocarpux flefilis Verrill. Part of bydrocladium. 



10. Cladomrpux jli:rilis. Side view of hydrotheca. 



11. Cladocarpus flexilis. Front view of hydrotheea. 

 1^. Cladocarpus flexilis. Phylactogonia and gouangia. 



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