﻿16 



a branch on the right of the fig. I. Tetraspores formed in 

 dilated processes near the margin of ramuli. Cystocarps roundish 

 oval, produced in the marginal setae. Colour deep red. Substance 

 stiff cartilaginous and harsh to the touch. 



Hab. On rocks below low tide ； Hiuga, Susaki (Tosa), 

 Shima, Cape Irako (Mikawa), Totomi, Sagami, Boshu, Kadzusa. 

 Cystocarps and tetraspores : August ― October. 



A canthopeltis ja/ponica, a species peculiar, as far as it is 

 known, to this country, is distinguished from all the allied plants 

 of the subfamily Gelidiece on account of its peculiar mode of 

 growth by proliferating short-pedicelled, disk-shaped, peltate ramuli 

 from the base of the uppermost ramuli. Another remarkable 

 plant which I have established as a new genus, Yatabella, and 

 have illustrated in Plate I, has so close resemblance with Acan- 

 thopeltis in its external appearence in having multifid-echinate 

 ramuli which are inserted in peltate manner, that I took it as a 

 new species of A canthopeltis, when I first colleted it at the 

 province of Hiuga. Besides its external resemblance, both genera 

 have their cystocarps as well as sporophylls bearing tetraspores 

 equally produced from the spines of ramuli. But, Yatabella grows 

 in a monopodial manner, as I have already stated under that 

 genus. 



The present plant prows abundantly in the warmer parts of 

 our Pacific coast, extending from the southern part of Kiushiu to 

 the Cape Inuboye, but is not yet known in Riukiu Islands as 

 well as in the coast of Japan sea. This alga is rarely free from 

 the covering of sponges, bryozoa, sand and various kinds of cal- 

 careous algae to such an extent that it is often taken as some- 

 thinp- else than alo-a. 



