33 



Eucratea. Articulated. A solitary and a curved 

 cell at each articulation. 



GENERA. 



FIRST CLASS.— FIRST ORDER. 



-^tea. Stem rampant, and branching. Cells so- 

 litary, and club-formed. Opening at the side. 



GENERA 



BELONGING TO THE SECOND ORDER OF THE FIRST CLASS. 



Pasithea. Articulated. Cells in threes, or in fours, 

 at each articulation. 



Amathia. Cells long and cylindrical; either all 

 touching, or separating in many groups of various 

 sizes. 



Nemertesia. Garnished with minute branches, or 

 rather polypiferous hairs, bent towards the stem, and 

 verticillated. 



Aglaophenia. Little branches, pinnated. Cells on 

 one side ; axillary or isolated. 



Cor, E 



