258 MR. E. M. HOLMES ON MARINE ALGE FROM JAPAN. 
RHODOPHYCE. Gracilaria confervoides. 
Callymenia reniformis. Grateloupia filicina. 
Catenella Opuntia. Griffithsia corallina. 
Ceramium rubrum. Gymnogongrus patens. 
Chondria tenuissinia. Halurus equisetifolius. 
» dasyphylla. Halymenia ligulata. 
Chondrus crispus. Laurencia, obtusa. 
Chylocladia kaliformis. » pinnatifida. 
Corallina mediterranea. Melobesia corticiformis, Kuetz. 
Fastigiaria furcellata. » membranacea. 
Gelidium corneum. » pustulata. 
Gigartina acicularis. Polysiphonia elongella. 
Gloiosiphonia capillaris. Pterocladia capillacea. 
APPENDIX II. 
Having had occasion to write to Herr Grunow concerning an 
unpublished species of his,a Grateloupia from Japan, with which 
I considered one of my specimens to be identical, he kindly for- 
warded for publication, as an Appendix to my paper, his description 
of the plant in question together with those of some other 
Japanese species which he had in hand. These species are as 
follows :— 
GRATELOUPIA GELATINOSA, Grun. (Pl. XII. fig. 3); fronde 
pulvinatá, crassiuscula, repetite dichotomá, laciniis linearibus, 
apicem versus sublationibus dichotomis angulo subacute sepa- 
ratis, tribus, quaternis vel quinis, ultimis rotundatis; prolifi- 
cationibus lateralibus nullis ; tetrasporis anguste lineari-oblongis 
favellis (raris) parvis, subglobosis, in segmentis penultimis et 
antepenultimis vix dispositis; planta parva in aqua dulci cito 
deliquescens. 
Hab. ad litora Japonie (Tanaka, nos. 7, 20, and 37, in Herb. 
Mus. Vindob.) 
The specimens examined are 23-4 cm. high and up to 4 mm. 
broad, of a dirty dark violet colour, and easily softening into a 
jelly in fresh water. It somewhat resembles G. dichotoma, but 
that species is less easily softened in fresh water, and is always 
more or less furnished with lateral proliferations and has acute 
apices. It varies, however, exceedingly in size, from scarcely a 
millimetre broad to very broad with numerous proliferations, so 
as to often approach G. Cosentinii, Kuetz. ( G. Proteus, Kuetz.). 
Possibly the following may be only forms of G. dichotoma, but 
l have for the present given them specific rank. 
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