— 190 - 



Codiaceae. 

 Halimeda Lamx. 



14. H. macroloba Decne. Corail, p. 91; De Toni Syll. I. p. 520. 

 Koh Kahdat, in 1 — 2 fathoms water (coral-sand). 



Area: Red Sea; Indian and Pacific Oceans. 



Udotea Lamx. 



15. U. flabellata Lamx. Polyp, flex. p. 31 1 t. 12; De Toni Syll. I. p. 510. 



The Pacific specimens seem to be a little more elongated and more 

 deeply split than the plants from the W. Indies; any other difference 

 is not to be seen. 



Off Koh Kam, in 10 fathoms water. 



Area: W. Indies; Ceylon; Tropic. Australia. 



16. U. glaiicescens Harv. List Friendl. Isl. Alg. Nr. 82; De Toni 

 Syll. I. p. 505. 



A fragment only. 



Koh Kahdat, in 1—2 fathoms water (coral-sand). 

 Area: Friendl. Islds. 



Avrainvillea Dene. 



17. A. papuana (Zan.) Murr, et Bood. Avrainv. in Journ. of Bot. 1889; 

 De Toni Syll. I. p. 514. — Chloroplegma papuanum Zan. Phyc. papuan. 

 Nr. 10 in N. Giorn. Bot. Ital. X. 1878. 



Koh Kahdat, in 1 - 2 fathoms water (coral-sand). 

 Area: N.Caledonia; N.Guinea; Ceylon; Philippines. 



18. A. comosa (Bail, et Harv.) Murr, et Bood. 1. c; De Toni Syll. 

 I. p. 515. — Chlorodesmis comosa Bail, et Harv. in Harv. Ner. boreal. 

 Americ. III. p. 29. (?) 



Undeveloped fragment only, therefore doubtful as to species. 

 Off Koh Kam, in 10 fathoms water. 

 Area: Warm Pacific (not uncommon). 



Valoniaceae. 



Dictyosphaeria Decne. 



19. IK favulosa (Mert.?) Dene Glassif. alg. p. 32; De Toni Syll. 

 I. p. 371. — Viva favulosa Mert. msc. 



Koh Kahdat, in 1—2 fathoms water (coral-sand). 

 Area: Warm Atlantic, Indian and Pacific Oceans. 



