195 



St. Croix: Judith Fancy (upon Turbinaria trialata) and another gather- 

 ing from the same island without exactly known locality (upon Zonaria lobata). 

 Geogr. Distrib.: West Indies, Red Sea, Indian Ocean, Japan etc. 



2. Jama adhaerens Lamx. 



LAMOUROUX, I. V. F., Histoire des polypiers coralligenes flexibl. vulg. 

 nommes Zoophytes, Caen 1816, p. 270. ARESCHOUG, J. E., in J. AGARDH, 

 Spec. Alg., vol. II, pars 2, p. 559. KUTZING, F., Tab. phycol., vol. 8, pi. 83, 

 figs, g, h. 



The specimens I have referred to this old species of LAMOU- 

 ROUX vary considerably with regard to size, length of joints in 



Fig. 184. Jania adhaerens Lamx. 



Habit of a specimen. 



(About 7:1). 



Fig. 185. Jania adhaerens Lamx. 



Upper ends of filaments showing the 



regular dichotomy. (About 20 : 1). 



proportion to breadth etc., but nevertheless it seems very natural 

 to me to take them together, as transitional links are found 

 between them and they, most probably, are nothing but variations 

 of the same plant due to differences in habitat. 



The plant grows upon stones, corals or similar substrata or 

 intertwisted among other Corallinacese, e. g. Amphiroa fragilissima 

 or epiphytically upon larger algae, especially Digenia, stems of 

 Halimeda, Avrainvillea etc. 



13* 



