PLAÏE IV. 



Lithothamnion pulclirinn A. Web. et Fosl. 



Fig. i — 4. Young or rather young specimens of the plant. Stat. 315. 



Fig. 5. A specimen partially dead, here and there burdened with small corals, or worms disturbing the 



tissue, or Bryozoa, the latter in part covered with crustlike formations of the plant. Stat. 315. 



Fig. A specimen with the shell of a mollusc between the outermost branches, the shell partly 



covered with crustlike formations issuing from the said branches. Stat. 315. 



Fig. 7 — 8. Specimens here and there burdened with delicate Bryozoa and other extraneous objects. Stat. 3 1 5. 



Fig. 9 — 10. Old specimens of which particularly the first one is much burdened with extraneous objects. 

 These objects are for a great part covered with crustlike formations of the plant which 

 develop even new branches. Stat. 315. 



Fig. 11. A specimen the lower part of which is dead. From the upper and living branches issue here 



and there new layers of tissue, which expand downwards over parts of the dead branches. 

 In this specimen a small and young specimen of the same species has been brought into 

 contact with two of the outermost branches. A crustlike formation some mm. broad has 

 been developed, issuing from both the said branches in a semicircle around one of the 

 branches of the said young specimen, but only in part confluent with the latter. Stat. 96. 



