PLATE XVI. 
Flustra. — Diachoris. — Carbasea. 
Figure 1 . — Flustra biseriata, .... 
la, magnified. 
„ 2. — Diachoris magellanica, var. distans, . 
2a, magnified. 
„ 3. — Carbasea ovoidea, . 
3 a, magnified. 
„ 4. — Carbasea pedunculata, 
4a, magnified. 
„ 5. — Carbasea elegans, .... 
5a, magnified. 
„ 6. — Flustra crassa, .... 
6a, magnified ; 6b, avicularium. 
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