JOHNSON AND Hensman—A List of Irish Corallinacee. 23 
stages of Corallina, and to be indicated in it by its disc of 
attachment. 
Reproduction takes place vegetatively by the usual Floridean 
tetrasporangia which, in the Corallinacez, show zonately arranged 
tetraspores. These asexual organs are like the male organs 
(antheridia) and female organs (procarps), arranged in groups in 
small hemispherical, conical, or depressed conceptacles, which open, 
in some cases, by a single pore; in others, in a sieve-like manner. 
The eystocarp, or fruit of sexually formed carpospores, is peculiar 
in its mode of formation, to the group. We obtained confirmation! 
of the views expressed by Solms Laubach and others as to the 
mode, in the examination of the cystocarps of Melobesia Coralline, 
Crn. We had hoped to give an account of our examination of the 
anatomy of different members of the group, but various duties 
have compelled us to postpone the matter for the present. The 
list embodies the result of collections made during the past seven 
or eight years at different points of the coast. One of us (T. J.), 
in April, 1891, spent a fortnight on the Fishery Survey boat, 8.S. 
Harlequin, with the Rev. W.S. Green, F.R.G.s., and made such 
collections, as opportunity afforded, between Galway Bay and 
Belmullet. It was during an enforced stay of several hours in 
Frenchport, to allow the Race round Erris Head to lose some of 
its force, that the species Melobesia confinis, Crn., a French weed, 
new to the United Kingdom, was collected. 
The late Professor W. H. Harvey wrote, fifty years ago, on the 
economic value of the Corallinaceze of Bantry Bayuetns ** corall 
sand”’—as a manure.” This coral sand, chiefly composed of 
Lithothamnion coralloides, is now largely dredged and used in 
county Cork as a top-dressing for lime for potatoes. In Conne- 
mara and other parts of the Irish coast similar coralline beds occur. 
We are not aware of their being utilized elsewhere than in 
Bantry district. We are indebted to R. J. Moss, F.c.s., F.1.¢., the 
Registrar and Consulting Chemist of the Royal Dublin Society 
and to T. S. Porter, Agricultural Superintendent, Irish Land 
1 The importance of this confirmation is increased by the just-published discovery 
of Oltmanns that in Dudresnaya, etc., a second act of fertilisation does not take place. 
2A specimen is to be seen in the Botanical Collections of the Science and Art 
Museum, presented by W. M. Murphy, s.p. The same species occurs on the west 
coast of France, and is used there also as a manure. 
