NEW OR CRITICAL BRITISH ALGLE. 117 
from Haplospora, in appearance, being simply bushier or more 
corymbose in the ultimate ramifications, and of a somewhat more 
brilliant brown when fresh, but turning the same olive green 
colour on drying. Microscopically, as far as the histological 
details are concerned, there is absolutely no recognizable differ- 
ence. Good opportunity for comparison was afforded owing to 
young plants of Haplospora growing from the same mass of 
rhizoids as the Scaphospora , and, indeed, in such a manner as to 
make it impossible to decide where the respective plants really 
originated. Reinke came to the conclusion that Scaphospora was 
simply the sexual condition of Haplospora (Ein Fragment aus der 
Naturgeschichte der Tilopterideen, Bot. Zeit., Feb, and March, 
1889, pp. 101, 125, and 155), and the Cumbrae specimens seem 
to support his views. It is quite a common experience with 
algologists to find in particular localities only the asexual condi- 
tion of algae, which are known likewise to have a sexual condition, 
or at any rate excessively small quantities of the latter as com- 
pared with the former. A most careful and prolonged search 
yielded only two specimens of Scaphospora, whereas hundreds of 
specimens of Haplospora were met with. The same locality affords 
a striking example of this in regard to another alga, Antithamnion 
floccosum, Klein. The tetrasporangiate form is found in great 
abundance, but not a scrap of its sexual condition could be 
obtained, although very careful search was made for the latter, 
both last year and this. 
Bornet, in a note on some Ectocarpi, Haplospora Vidovichii and 
Tilopteris Mertensii (Bulletin de la Soc. Bot. de France), argues 
in favour of the Ectocarpacean affinities of the Tilopteridece, 
whereas Reinke thinks they show affinities with the Dictyotacece , 
near which latter indeed the Tilopteridece have provisionally been 
placed (c/. A Revised List of the British Marine Algae, Holmes 
and Batters, p. 85 et seq .) 
Ectocarpus tomentosoides has now likewise been found on the 
east coast of Scotland (cf. Grevillea, Yol. xxi., pp. 20 and 98). 
Besides the common plurilocular a few examples of apparent 
unilocular sporangia were observed. These are somewhat clavate 
in shape, and the contents, which are, however, not clearly differ- 
entiated into spores, were in several cases found to have been dis- 
charged. 
G. B. 
Bibliography. 
Om Fucoideslagtet Myelophycus, Kjellm. Af F. R. Kjellman, Med. 
en Tafia, Stockholm, 1893, pp. 1-11. (Bihang till K. Svenska 
vet.-akad. Handl., Band 18, Afd. iii., Ro. 9). 
This paper consists of a description of a Japanese alga, which 
is possibly identical with the Ghordaria simplex described by Har- 
vey (Perry Expedition, Yol. ii., Washington, 1856, pp. 331-332). 
