— 190 — 
' Codiaceae. 
Halimeda Lamx.. 
14. WH. macroloba Decne. Gorall. p. 91; De Toni ‘Syll. I. p. 520. 
Koh Kahdat, in t—2 fathoms water (coral-sand). 
Area: Red. Sea; Indian and Pacific Oceans. 
Udotea Lamx. 
15. U. flabellata Lamx. Polyp. flex. p. 311 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, glaucescens Harv. List Friend]. Isl. Alg. Nr. 82; De Toni 
Syll. Lp. 505. 
A fragment only. 
Koh Kahdat, in 1—2 fathoms -water (coral-sand). 
Area: Friendl. Islds. 
Avrainvillea Decne. 
17. A. papuana (Zan.) Murr. et Bood. Avrainv. in Journ, of Bot. 1889; 
De Toni Syll. I. p. 514. — Chloroplegma papwanum 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. comesa (Bail. et Harv.) Murr. et Bood. 1. c.; De Toni Syll. 
I. p. 515. — Chlorodesmis comosa Bail. et Harv. in Harv. Ner. boreal. 
Americ. lll. 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. BD. favulosa (Mert.?) Dene Classif. alg. p. 32; De Toni Syll. 
I. p. 3871. — Ulva favulosa Mert. msc. 
Koh Kahdat, in 1—2 fathoms water (coral-sand). 
Area: Warm Atlantic, Indian and Pacific Oceans. 
