— 191 — 



Valonia Ginn. 



20. V. utriciilaris Ag. Spec. p. 431; De Toni Syll. I. p. 376. - 

 V.utricularis f. aegagropila Hauck Meeresalg. p. 469. — V. aegagropila Ag. 



With Hauck 1. c. I consider V. aegagropila only a form of V. utricularis. 



Koh Kahdat, on coral-reefs in shallow water. 



Area: Mediterranean; Atlantic; Indian and Pacific Oceans. 



21. V. Forbesii Harv. Alg. Geyl. exsicc. N. 75; De Toni Syll. I. p. 374. 

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



Area: Indian Ocean; warm Pacific. 



Struvea Sond. 



22. Sr. delicatula Kg. Tab. phyc. XVI. p. 1 t. 2; Murr, et Bood. 

 Struvea. p. 281, Nr. 6; De Toni Syll. I. p. 366. — Cladophora 

 anastomosons Harv. Mar. Bot. W. Austr. Nr. 39. Alg. aust. exsicc. Nr. 582. 



Little plant and fragments only, which are however characteristic enough. 



Koh Lorn, on coral-reefs in shallow water. 



Area: Guadeloupe; Ceylon; Australia, N. Caledonia. 



Siphonocladus Schmitz. 



23. S. Zollingeri (Kg) Born, in Hariot in Jour. Bot. 1887, p. 56; 

 De Toni Syll. I. p. 358. — Cladophora (Aegagropila) Zollingeri Kg. 

 Spec. p. 415, Tab. phyc. IV. t. 64. 



Off Koh Kahdat, in 5 fathoms water (coral-sand). 

 Area: Java. 



Boodlea Murr, et De Toni in Journ. Linn. Soc. Bot. XXV. 



24. B. (coacta var?) Siameiisis Beinb. u. sp. 



B. intricata, subspongiosa ; lilamentis primariis paullulum laxe 

 ramosis, ramis dense divaricatimque quoquoversum ramulosis; 

 ramulis hinc illinc ope tentaculorum inter se cohaerentibus ; articulis 

 longitudine valde inaequalibus, primariis ad 200 ramulorum c. 

 30 — 40 n crassis, articulis terminalibus apice obtusis; articulis 

 primariis saepe elongatis usque 20plo diametro longioribus. 



This is a true Boodlea and, as I think, a good species nearly related 

 to B. coacta, but which by other algologists may perhaps be considered 

 only a variety of the latter. 



Our plant differs from B. coacta — of which I have a specimen from 

 Japan (leg. Okamura) beside me for comparison — by somewhat less 

 compact and less sponge-like habit, as the primary filaments, provided 

 in part with much elongated joints, are not so densely beset with main 

 branches. The density however of the branches of the second order and 



Botanisk Tidsskrift. 24. Bind. ■ 13 



