96 
NEW BRITISH MARINE ALG.E. 
author is induced to do this by the fact that the frond in these 
two species, which at first is filiform and simple, or very slightly 
branched, and composed of a single row of cells, then longitudinally 
divided in many directions, always remains filiform, and is never 
flat and ribbon shaped. In all other respects the genus agrees 
with Schizogonium. 
Besides the new genera and species already mentioned, two new 
species of Ectocarpus — E. pycnocarpus and E. cecidioides ; anew 
species of Urospora — V. Hartzii ; two new species of Ulvella — 
U. confluens and U. fucicola ; two new Monostromce — M. lepto - 
dermuni and M. (?) grcenlandicum ; a new Chlorochytrium , Ch. 
Schmitzii ; and a new Pleurocapsa , P. amethystea , not to mention 
several new forms and varieties of other species, e.g., a new and 
interesting variety ? of Pogotrichum filiforme, Rke., are described 
and figured for the first time in this paper. 
The paper is fully illustrated, and is well worthy of careful 
study, and the author is certainly entitled to the thanks of all 
algologists. E. A. B. 
Om en ny organisationstyp inom sldgtet Laminaria. Af F. R. 
Kjellman, Med. 1 Tafia, Stockholm, 1892, pp. 1-17. (Bihang 
till K. Svenska vet.-akad. Handl., Band 18, Afd. iii., No. 7). 
In this paper Dr. Kjellman points out that a new method of 
arranging the genus Laminaria is possible, dependent upon the 
character and position of the sori. He recognizes eight types, and 
divides them into two groups, the one having the sori occupying 
the central portion of the frond, and the other the lateral portion. 
The following species are chosen as the types : — 
1. L. Agardhii, Kjellm. — Sorus developed about or above the 
middle of the frond. 
2. L. longipes, Bory. — Sorus developed at the base of the leaf 
before the new leaf appears. 
3. L. bullata, Kjellm. — Sorus developed at the base of the leaf 
after the new leaf has appeared. 
4. L. hieroglyphica , J. Ag. — Sorus arising from the union of 
several partial sori, and occupying the centre of the frond. 
5. L. digitata, Lamour. — Sori usually numerous on each division 
of the frond. 
6. L. angustata, Kjellm. — Sori, one or few, on each margin of 
the leaf, and on one surface only, and developed before the new 
frond is formed. 
7. L. Bodriguezii, Born. — Sori on both sides of the frond, 
developed after the new frond is formed. 
8. L. gyrata, Kjellm., MS. — Sori branched, numerous on each 
side of the leaf. 
The last species is now described for the first time, and is figured 
on Tail. 1. It apparently bears some resemblance to L. liiero- 
glyphica, but has a short stem, and the sori do not become con- 
fluent, and a central band is left quite free from sori. It has no 
muciferous lacunee. E. M. H. 
