Plate. I. 



Fig. 1. FiligcUa miUuhurii, n. sp. ; two complete specimens, x \. 



Fig. 2. Acis pustidata Wright & Studer ; anterior surface of the 



colony. X \. 



Eig. 3. Acis ijimai, n. sp. x \. 



Fig. 4. Acis miyajimai, n. sp. ; entire colony. 



Fig, 5. Same ; portion of branch ; anterior surface. X \. 



Fig. 6. Same ; portion of branch ; posterior surface. X \. 



