— 196 — 



Rhodophyceae. 



Bangiales. 

 Bangiaceae. 



Erythrotrichia Aresch. 



41. E. ceramicola (Lgby.) Aresch. Phyc. Scand. p. 210; De Toni 

 Syll. IV. p. 24. — Bangia ceramicola Ghauv. — Goniotrichum ceramicola 

 Kg. — Conferva ceramicola Lgby. Hydroph. Dan. p. 144, t. 48. 



On Padina and Laurencia. 



Koh Chang-Strait at Lem Ngob, on rocks between tide-marks. 

 Area: Mediterranean; Atlantic; Gape Horn; Timor; Tonga Isis. 



Florideae. 

 Gelidiaceae. 



Gelidium La rax. 



42. G. Crinale (Turn.) Lamx. ; De Toni Syll. IV. p. 156; G. corneum 

 var. crinalis Auct. J. Ag. Spec. II. p. 470. — Fucus crinalis Turn. Hist. 1. 198. 



The specimen agrees in its habit with Àcroearpus intricatus Kg. 

 Tab. phyc. XVIII. t. 35. 



Koh Chang Noi and Koh Lorn, creeping on coral-reefs in shallow water. 

 Area: Mediterranean; Atlantic; Red Sea; Pacific. 



Rhodophyllidaceae. 

 Catenella Grev. 



43. C. Nipae Zan. Phyc. indie. Pug. Nr. 35, t. 6 ; De Toni Syll. IV. p. 321 . 



Koh Chang-Strait at Lem Ngob, creeping on the roots of mangrove-trees 

 between tide-marks. 

 Area: Sarawak. 



Rhabdonia Harv. 



44. It. Schinidtii Reinb. n. sp. (Fig. 1—5). 



R. gelatinoso-membranacea, caespitosa, decumbens e tereti- 

 usculo compressa, Vs — 2 mm. lata, dichotome et parce inordinateque 

 lateraliter ramosa, frondes (et segmenta cujusque frondis) et inter 

 se et cum aliis corporibus ope processuum hinc illinc arete con- 

 crescentes; segmentis saepe -f- elongatis marginibus paullulum 

 inaequalibus (sparsim leviter constrictis et dilatatis) apieibus 

 obtusis vel subacutis, prolificationibus et processibus difformibus, 

 plerumque -j- minutis, e marginibus vel rarius e disco emergentibus, 

 praeeipue versus apices et ad apices obsitis. Tetrasp. generis 



