PLATE XL 
Figs. 1, la . — Campanularia retroflexa (p. 21). 
Fig. 1. — A colony; natural size. 
Fig. la . — Portion of a colony ; magnified 15 diameters. 
Figs. 2, 2 a. — Campanularia chelonise (p. 22). 
Fig. 2. — A colony ; natural size. 
Fig. 2 a . — Portion of a colony ; magnified 25 diameters. 
Figs. 3, 3 a. — Lictorella cyathifera (p. 36). 
Fig. 3. — A colony ; natural size. 
Fig. 3a. — Portion of a colony; magnified 15 diameters. 
