1918] MaAacCAUGHEY—HAWAIIAN ALGAE 145 
GIGARTINACEAE 
Gigartina papillata (Agh.) J. Agh.—Frond flat, simple or appar- 
ently dichotomous, segments truncate-cuneate; recorded only 
from the Hawaiian Islands and the Golden Gate. 
Gymnogongrus vermicularis americana J. Agh.—A cosmopolitan 
species. 
G. disciplinaris (Bory) J. Agh.—Recorded from various parts 
of the Pacific. 
These algae are generally called limu ua-ua-loli by the natives, 
but there are also a number of other native names: limu ekaha-kaha, 
limu ko-ele-ele, limu awiki-wiki, limu nei. They grow far out on 
the coral reefs, along the outer margin, where the surf is heavy. 
All have tough, strong holdfasts. They are most abundant on 
Maui and Molokai, and are rather scarce in Hawaii. 
Abnfeltia concinna J. Agh.—Native name limu aki-aki or limu 
eleau. A succulent, brittle, reddish brown alga, abundant on 
partially submerged lava rocks along the coasts. It shows a prefer- 
ence for exposed black lava rocks, in rough water, where it receives 
the heavy surf. It occurs in large quantities in these habitats 
along the shores of Kauai, Oahu, and Hawaii, and is plentiful here 
and there in a few localities on the other islands. Sometimes it 
grows in quiet coves or behind lava ledges in less exposed places. 
This seaweed is relished by the natives and is commonly sold in 
the markets. Its air dry composition is, roughly, water 20 per 
cent, protein 5 per cent, starches, sugar, etc., 55 per cent, crude 
fiber 3 per cent, ash 15 per cent. In the fineness and clarity of its 
gelatine this alga is exceeded only by Gracilaria coronopifolia. 
A. Durvillaei (Bory) J. Agh.—Recorded from various parts of the 
Pacific. 
RHODOPHYLLIDACEAE 
Eucheuma nudum J. Agh.—Frond terete, subcompressed, 
dichotomously branched; recorded only from the North Pacific. 
SPHAEROCOCCACEAE 
Sphaerococcus coronopifolius (Good. and Wood.) Agh.—Fronds 
dichotomously branched; fairly common; also occurs in many 
Parts of the Pacific and Atlantic. 
