MR. E. M. HOLMES ON MARINE ALGE FROM JAPAN. 257 
It differs from the typical species of Chondria in the same 
way that Champia lumbricalis, J. Ag., differs from the other 
species of that genus; the stems being stout and succulent, and 
the fruiting branchlets arranged in dense fascicles in the axils of 
the branches, 
Hab. Enoshima, Saida, no. 26; Ohkubo, no. 29. 
POLYZONIAS FISSIDENTOIDES, n. sp. (Pl. XII. figs. 2 a, 25); 
fronde basi parce ramosá, ramis alternis, foliis alternis, distichis, 
subdecurrentibus, utrinque integerrimis, lineari-lanceolatis acutis, 
pagina transverse zonatá. Fructibus non visis. 
Hab. Enoshima, Ohkubo, no. 16. 
Parasitical on other alge. 
The only specimen received is about 2 inch long, slightly 
branched at the base, and at the height of about } inch exhibits 
an interruption of growth, the leaves becoming smaller and 
enlarging again above the interruption. The leaves are quite 
distinct from those of any other known species, being narrowly 
lanceolate and acute, and the cells form sbort tubes arranged in 
rows, in this point resembling P. jungermannioides, J. Ag. The 
nearest species in form is P. ovalifolia, Hook. et Harv., but this 
has the upper margins of the leaves serrate and the cells 
hexagonal. The plant is so like a Fissidens iu habit, that the 
name jfissidentoides seems peculiarly appropriate. 
APPENDIX I. 
British Marine Alge occurring also in Japan. 
CvANOPHYCEE. PuoPHYCEX. 
*Dermocarpa Schousbzi, Born. Asperococcus bullosus. 
*Lyngbya confervoides. Castagnea divaricata. 
Chorda Filum. 
CHLOROPHYCEX. Chordaria flageliiformis. 
Chaetomorpha crassa. Desmarestia viridis. 
Cladophora gracilis. Dictyota dichotoma. 
Codium tomentosum. Dictyopteris polypodioides. 
Enteromorpha complanata. Laminaria flexicaulis, Le Jol. 
» crinita. » saccharina. 
» ramulosa. Leathesia tuberiformis. 
» Linza. Padina pavonia. 
Ulva latissima. Scytosiphon lomentarius. 
* In the collection received by me, Dermocarpa is parasitical on the Lyngbya. 
These were determined at my request by M. Maurice Gomont. 
