— 199 — 
The specimens show the structure and the other characteristic points 
of Gracilaria dura, a species much varying in its habit; but I think 
our plant represents a very distinct form, which should be fixed. In 
general, prolifications occur rarely in the genus Gracilaria. 
The specimens, provided with cystocarps, are somewhat stout and 
robust, about 10 cm. high and about 1—11/2 mm. thick (in diameter). 
Koh Chang-Strait, in shallow water near Lem Ngob. 
Hypnea Lamx. 
47. U. musciformis Wulf.) Lamx. Ess. p. 43; De Toni Syll. IV. p. 472, — 
Fucus musciformis Wulf. in Jacq. Coll. Ill. p. 154, t. 14. Fig. 3. 
A small but fruiting (tetrasp.) specimen. 
Koh Chang-Strait at Lem Ngob, in sandy ground between tide-marks. 
Area: In all warm Seas. 
Champia Desv. 
48. Ch. parvula (Ag.) J. Ag. Epic. p. 303; De Toni IV. p. 558. — 
Lomentaria parvula Gaill. — Chylocladia parvula Hook. — Chondria 
parvula Ag. Syst. p. 207. 
The (sterile) specimen agrees in its habit with Lomentaria parvula 
8. vaga Kg. Tab. phyc. XV. t. 87. 
4 miles S. of Koh Saket, in 9 fathoms water (shells). 
Area: Mediterranean; Atlantic; Australia; Japan. 
Caloglossa (Harv.) J. Ag. 
49. (. muioides Harv. Alg. exsicc. Friendl. Isl. Nr. 33; J. Ag. Epic. 
p- 500; De Toni Syil. IV. p. 729. — Hypoglossum: Vieillardi Kg. Tab. 
phyc. XVI. t. 10. 
Very young specimens only, therefore somewhat doubtful as to species. 
15 miles E. of Koh Chuen, in 10 fathoms water (shells.). 
Area: N. Guinea; N. Caledonia; Friendl. Islds.; Ceylon. ? 
Laurencia Lamx. 
50. L. divaricata J. Ag. Spec. Il. p. 754. 
Koh Kahdat, in 1—2 fathoms water (coral-sand). 
Area: Red Sea; Indian and Pacific Oceans. 
51. L. dendroidea J. Ag. Spec. II. p. 753. 
Koh Kahdat, cast ashore. 
Area: Warm Atlantic; Pacific (Australia, Japan). 
