PLATE III. 



PIG. 



1-3. Gemellaria loricata, p. 18 : figure 3 is taken 

 from a specimen of G. WilUsii received from Dr. 

 Dawson. 



4. • -^ natural size. 



5-8. ScRUPARiA clavata^ p. 24; the uniserial and bi- 

 serial forms. Fig. 7 shows the mode of branching. 



9, 10. EUCRATEA CHELATA^ p. 14. 



11. — - — ■, creeping base, M'ith oval expansions, 



from which the shoots originate. 



