—~ 
OF THE MALDIVE AND LACCADIVE ISLANDS. 481 
FLORIDES. 
19. GanaxauRa ruGosA, Lame. 
Minikoi, Laccadive Islands. A very brilliant pink-coloured 
alga, common on outer part of reef-flat ‘near south-east point of 
reef, but extremely local elsewhere. 
Geogr. Distr. Warm Atlantic, Indian Ocean, Pacific. 
20. GreLipiuM rierpuM, J. Agh. 
Minikoi, Laccadive Islands. From sand-flat of lagoon near 
lighthouse. Also growing with Turbinaria ornataand Sargassum 
duplicatum, and forming as it were a basis for them. 
Geogr. Distr. Warm Atlantic, Indian Ocean, Pacific. 
21. Gractnarta crassa, Harv. 
Minikoi, Laccadive Islands. With Valonia confervoides. 
Geogr. Distr. Indian Ocean. 
22. LavRENcIa sp. 
Minikoi, Laccadive Islands. From: sand-flat of lagoon near 
lighthouse. Also with Corallina sp. 
23. SPYRIDIA ACULEATA, J. Agh. 
Minikoi, Laccadive Is. This plant has the outward appearance 
of §. tnsignis, which is an Indian Ocean species, but the ramelli 
are long and uncorticated, and form a dense covering to the 
branches. They are hooked at the ends, and in every way more 
closely resemble the ramelli of S. aculeata than those of S. in- 
signis. I have therefore called this plant S. aculeata, J. Agh., 
though it does not represent the typical form of the species. 
Among the Schousboean alge in the British Museum Herbarium 
there is a specimen of S. aculeata which is denser than the other 
plants, and more nearly resembles the Minikoi specimen. In 
Minikoi it grows principally on the reef where it passes into the 
beach, but is not found generally opposite the boulder zone. It 
is often exposed for 3-4 hours at low tide (for more than 4 hours 
on July 26th, 1899). It may occur on the reef-flat, but never 
does so commonly ; and it never roots itself in sand. 
Geogr. Distr. Mediterranean, Atlantic, Red Sea. 
24. Hatymenza Formosa, Harv. With tetraspores. 
Minikoi, Laceadive Islands. From sand-flat of lagoon near 
lighthouse. 
Geogr. Distr. Indian Ocean, Pacific. 
