PLATE IX. 



Goniolithon Fosliei (Heydr.) Fosl. Fig. i — 5. 



Fig. 1. An authcntic specimen from El Tor. 



Fig. 2. An older and typical cystocarpic specimen attached to a coral. Stat. 78. 



Fig. 3. A loss regularly developed one. Stat. 91. 



Fig. 4. An old specimen irregularly developed, with smaller or larger excrescences, at least in part owing 



to an irregular substratum, or numerous passages made by worms, around the orifices of wliich 



new formations of tissue are by and by heaped up. Zanzibar. 

 Fig. 5. A typical specimen attached to a piece of coral and partially covering Peyssonnelia sp., a part 



of which is visible to the right in the figure. Stat. 91. 



Goniolithon myriocarpon Fosl. Fig. 6 — 7. 



Fig. 6. Part of the type specimen attached to a shell. Massauah on the Red Sea. 

 Fig. 7. A sporangia-bearing specimen. Stat. 86. 



Goniolithon megalocystum Fosl. Fig. 8 — 9. 



Fig. 8. A fragmentary, sporangia-bearing specimen, representing the type of the species. Stat. 129. 

 Fig. 9. A supposed form of the species loosely covering Bryozoa, Squamariaceae, a young Goniolithon 

 frutescens and other calcareous algae attached to a piece of coral. Stat. 93. 



Goniolithon laccadivicum Fosl. Fig. 10 — 13. 



Fig. 10. The type specimen from the Maldives. 



Fig. 11. A rather young specimen attached to a coral. Stat. 311. 



Fig. i-- An old one. Stat. 301. 



Fig. 13. A not quite typical specimen (approaching certain forms of G. frutescens), accompanied by 



Lithophyllum Okamurai and Goniolithon Reinboldi, which are partly visible to the left and at the 



lowest part of the figure. Stat. 91. 



