PLATE Xlll. 



i villea lacerata J. Ag. forma typica. Ilabit of plant, nat. size. (Friendly Islands, Harvey, 



n . sr,. in Herb. Mus. Brit.). 

 Ditto. Frond-filaments of same 100. a. supra-dichotomial constrictions of sami 420. The 

 filaments are cylindrical, tapering, with apices often slightly torulosc, generalij- not tortuous ; 

 the filaments of the interior are often yellowish-brown. 

 Ditto. Ilabit of plant, nat. size. (Beo, Karakelang, reef, Siboga Expedition). 

 10S. Ditto. var. robustior n. var. Habit of plant, nat. si/. apore, Ridley; spirit specimen in 



Herb. Mus. Brit. . 

 109. Frond-filaments of same 100. a. supra-dichotomial constrictions of samc, more long-necked 



than in the type. 420. 

 il. Avrainvillea sordida Murray and Boodle. Ilabit of type-plant, nat. size. Guadeloupe, Mazi n". 30, 



:. in Herb. Mus. Brit.). 

 111. Ditto. Frond-filaments of same 100. They are cylindrical, tapering, liere and there torulose, 

 rarely submoniliform, not <>r very slightly tortuous at apic 



