276 PERCY SLADEN TRUST EXPEDITION 
very distinct. The articulations are at the base of each dichotomy and the internodes 
are as a rule long. 
DERMONEMA, Greville. 
1. DERMONEMA DICHOTOMUM, Harv. 
Harvey, Ceylon Algee, n. 98. 
Schmitz u. Hauptfleisch in Engler u. Prantl, Natiirl. Pflanzenfam., Teil 1, Abt. 2, 1896, p. 335. 
De Toni, Syll. Alg. vol. iv. sect. 1. 1897, p. 102. 
Mahé, Cap Terné; dry specimens. 
Distribution. Ceylon; Formosa; Malay Archipelago. 
Fam. CHATANGIACEH A. 
GuoropHia@a, J. Agardh. 
1. GLOIOPHL@A (?) ARTICULATA, n. sp. (Plate 16. fig. 1; Plate 18. figs. 26, 27.) 
Frondibus ‘dichctomis, articulatis, usque ad 18 cm. altis, ramulos adventitios ex nodis 
orientes gerentibus; internodiis cylindraceis, subecompressis, ad basin contractis; 
internodio terminali apice rotundato. Jrondibus constantibus e cylindro centrali 
filis hyalinis, tenuibus, peripheriam versus excurrentibus contexto. Filis per 
dichotomiam divisis, stratum periphericum cellularum minimarum moniliformium 
arete conjunctarum et cuticula crassa coopertarum formantibus. Organis 
generationis ignotis. 
Cargados Carajos, dry specimen, 30 fms.; in alcohol, 45 fms. 
The alge from Cargados Carajos are barren, the determination is therefore not beyond 
doubt, but the anatomical structure of these plants is so typical and so like that of the 
family Cheetangiace (Pl. 18. figs. 26, 27) that I should be very much surprised if the 
organs of fructification should prove these algze to belong to another family. Amongst 
the Cheetangiaceze they stand nearest to Gloiophlea. ‘They are distinguished, however, 
from Glotiophlea scinaioides—the only known species of the genus—by their articulate 
frond; the internodes are usually—though not always—contracted into a short pedicel- 
like node, and from this node adventitious branches may spring, but as a rule the 
branching is dichotomous. The peripheral layer consists of small cortical cells, covered 
by a rather thick cuticle; these small tightly adhering cortical cells distinguish the 
genus Gloiophlea from the genus Scinaia. 
GALAXAURA, Lamouroux. 
1. GALAXAURA LIEBMANNI (Aresch.), Kjellm. 
Areschoug, “ Phycez nove,” in Act. Reg. Soc. Scient. Upsal. ser. 3, vol. i. 1854, p. 356. 
Kjellman, “ Floridé Sligtet Galavaura,” in Kongl. Sv. Vet.-Akad. Handl. Bd. xxxiii. 1900, p. 46. 
Praslin, reef; in alcohol. 
Distribution. Mexico; Vera Cruz. 
Though Galaxaura LIiebmanni is only known from the West Indian tropical seas, the 
peculiar structure of the short cortical filaments and the compact outward appearance 
