ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
215 
in various provinces of Japan. They number 181, to which is added 
one fungus, a Leptosphseria. Wainio has found many new species in 
the material, among them three species of Melanaspicilia , a genus that 
bears the same relationship to Physcia or to Rinodina that Aspicilia 
bears to Lecanora. The other genera are familiar to European licheno- 
logists. The paper is a continuation of one published in the same 
journal (1918, 32, 154-63). A. L. S. 
New Japanese Lichen Species. — Atsushi Yasuda ( Bot . Mag., 
Tokyo , 1921, 35, 8). A separate notice is given of these lichens, but 
the full descriptions are printed in Wainio’s paper ; they are species of 
Ochrolechia , Lecanactis and Polyblastia. A. L. S. 
Different Forms of Lichen Symbiosis in Solorina saccata and 
S. crocea. — M. and Madame Moreau (Rev. Gen. Bot., 1921, 33, 81-7, 
1 pi.). The authors have studied the problem of symbiosis between 
fungus and alga in the cephalodia of these two lichens. In Solorina 
saccata are found external cephalodia on the lower surface of the thallus. 
Algas, other than those normal to the thallus, with which the thallus 
may come in contact are left intact, but if Nostoc algrn are encountered, 
the lichen hyphrn grow out and surround the algal cells, thus forming 
a small tubercle. These tubercles are considered by the authors to be 
of a gall nature. In some instances the alga is drawn deeper into the 
tissue, and an internal cephalodium arises. In Solorina crocea the alien 
Nostoc algae form a layer beneath the normal gonidial layer of bright 
green cells ; it is an extended cephalodium. As in these cephalodia 
dead algae are frequent, the authors trace a development from patho- 
logical conditions to symbiosis, but claim that the research has confirmed 
their view as to the general pathological character of lichen symbiosis. 
A. L. S. 
Mycetozoa. 
Preliminary List of the Myxomycetes of the Cayuga Lake 
Basin.— F. B. Wann and W. C. Muenscher ( Mycologia , 1922, 14, 
38-41). The territory from which the Myxomycetes were collected is 
situated in Central New York State. The list includes 92 species in 
30 genera and 11 families. A. Lorrain Smith. ,1 
Mycetozoa Found During the Minehead Foray. — G. Lister 
(Trans. Brit. Mycol. Soc ., 1921, 7, 10-12). A list of forty-nine species 
is given, a good average result for the time and the district. One of 
the most notable finds was Cribraria pyriformis on sawdust heaps, a 
rare species in England, though frequently found in Scotland. 
A. L. S. 
Mycetozoa at Porlock in October 1920.— Norman G. Hadden 
(Trans. Brit. Mycol. Soc., 1921, 7, 13-16). Hadden writes this paper 
as a supplement to the account of the Minehead gatherings. In 
October the weather had become moist and favoured the development 
of many more species than had appeared at the date of the Minehead 
foray. He gives descriptions of most of these, noting especially the 
