(97) 



seldom seen ou the beach. The present species is less common but 

 equally exposed, yet we never met with it among rejectamenta. These 

 and many others seem, in their delicate and yielding stems, to possess a 

 safeguard from the tempest, while others more stubborn and resisting 

 are brokeji or torn up by the roots. 



EXPLANATION OF PLATE CI. 



Fig. 1. — Ceramium Deslongchampii, natural size. 

 2. — Hamulus with favella? ? 

 3. — Hamulus with a favella. 

 4. — Hamulus with tetraspores. 

 5. — Joint from same, more magnified. 

 6. — Tetraspore from same. All magnified. 



voT,. ir. 



