278 ! PERCY SLADEN TRUST EXPEDITION 
Fam. GELIDIACE. 
GELIDIUM, Lamouroux. 
1. GELIDIUM CRINALE (Turn.), Lamx. 
De Toni, Syl. Alg. vol. iv. sect. 1. 1897, p. 146. 
Fucus crinalis, Turner, Hist. Fuc. tab. 198. 
Chagos Archipelago, Diego Garcia, in alcohol ; reef. 
Distribution. Mediterranean; Red Sea. 
2. GELIDIUM PANNOSUM, Grun. 
Grunow, Algen der Fiji, Tonga u. Samoa Inseln, 1874, p. 40. 
Coetivy, reef, on a piece of coral; in alcohol. 
Distribution. Upolu, Samoa Archipelago; Ceylon; Friendly Islands. 
Fam. GIGARTINACEA. 
Inipma, Bory. 
1. IRIDmMA spec. 
Cargados Carajos, fragment with cystocarps, in alcohol, 22 fms. 
Amirante, fragment with tetraspores, in alcohol, 20-25 fms. 
The specimens from both localities are too fragmentary to allow of a specific 
determination, though the tetraspores being scattered among the peripheral cells 
indicate that the plant belongs to the subgenus Rhodoglossum, J. Ag. Both specimens 
are so alike in anatomical structure and outward appearance that, as far as can be 
judged from the small fragments, I feel almost certain that they belong to the same 
species. 
Ponyceenia, J. Agardh. 
1. Potyoe@1Lia vAN HOEVELLI, n. sp. 
Amirante, 30-100 fms. ; in alcohol. 
Distribution. Malay Archipelago. . 
The species is represented in the collection by such a poor and barren fragment that 
I should have been unable to name it, had it not been for my studies on the rich 
material collected during the ‘“‘ Siboga” Expedition in the Malay Archipelago. This alga 
will therefore be described and figured in the forthcoming paper on the ‘‘Siboga”’ algee. 
Fam. RHODOPHYLLIDACEA. 
SarconEMA, Zanardini. 
1. SARCONEMA FURCELLATUM, Zan. 
Zanardini, Plante Mar. Rubro Enum. p. 264. 
De Toni, Syll. Alg. vol. iv. sect. 1. 1897, p. 367. 
