40 
SPHJSRIACE./E IMPERFECTS COGNITS, 
The following two species appear to have been omitted, as we 
fail to trace them in the Index : — 
Valsa aperta, Fr. Syst. n. 407., Schwein. Amer. Bor., No. 1381. 
Circinata, perithecia exigua, cortici interiori immersa, subinde 
irregulariter aggregata, superne crusta tegente juncta. Ostiola 
peritheciis duplo longiora, erumpentia, primo pro more conver- 
genti a dein erecta, apice perforata. Ascis clavato-cylindricis. 
Sporidiis allantoideis, hyalinis *018 X ‘006 mm. 
In ramis Populinis. 
Valsa (Cryptosporella) divergens, Schioeinitz. Sphaeria, divergens 
Schwein. Syn. Car., 123, S. ('circinatoej divergens, Schm. Amer. Bor , s 
No. 1393. 
Receptaculum tumidiusculum, caespes sphaerularum 2-4 lineas 
diametro aequans suborbicularis, cingitur epidermide. Sphaerulae 
atrae vel cinerascentes, ostiolis teretibus longissimis s. sphaerula sua 
triplo longioribus, divergentibus. Ascis octosporis ; sporidiis sub- 
ellipticis, hyalinis, *002 x '007 mm., endochromate granuloso. 
In ramis Liquidambaris dejectis. 
BRITISH FRESH WATER ALGiE. 
This work is now complete in two volumes, cloth, gilt tops. 
There are only a very limited number of copies left, of which the 
published price is £4 10s. 
Since the appearance of the last part we have been apprised by 
Mr. F. Bates, of Leicester, of the discovery of CEdogonium excisum 
(page 157) in Leicestershire. The only previous locality recorded 
in these islands was Ireland. Also another closely-allied species, 
not referable to any yet recorded as British, but not at present 
satisfactorily determined. 
From time to time we shall endeavour to announce all additions, 
of which we are assured, in the pages of this journal. 
SOCIETY MYCOLOGIQUE. 
We have received a prospectus of this Society, which it is pro- 
posed to establish in France, with our friends Dr. Quelet as Presi- 
dent, and M. Boudier as Vice-President. This Society is to be 
composed of French members and foreign members, and is to be 
divided into four sections, besides a section for the colonies, each 
section to have its own mycologic Session, and a general session 
annually. Annual subscription ten francs for members, and five 
francs for corresponding members ; to each, in proportion, the 
publications of the Society will be sent. The Secretary is Dr. A. 
Mougeot, Bruyeres, Vosges, France. All persons giving in their 
adhesion to the programme before the 30th December will be 
entitled Founders. 
