PLATE III. 
Cellulari a. — Bugula. 
Figure 1. — Cellularia crateriformis, 
la, magnified; lb, with ocecium. 
„ 2 . — Cellularia biloba, 
2 a, magnified ; 2b, with ocecia. 
„ 3. — Cellularia elongata, . 
3a, magnified ; 3b, back view. 
,, 4. — Bugula versicolor, 
4a, magnified ; 4 b, with ocecia. 
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