230 
held and where will be found the receiving office (for the delivery 
of admission tickets, incriptions, etc.), the meeting-room of the 
Committee, the writing-rooms, buffet, post office, telephone, etc., 
reserved for members of the Congress. 
Arrangements have been made with the Italian and foreign 
railway companies and also with the chief steam navigation com- 
panies to obtain the usual reduction of fares for the members of 
the Congress. It is urgently requested that the printed forms of 
assent may be returned to the Committee not later than July 1, 
1892, so that the drawing up and forwarding of the relative 
papers may be carried out in good time. 
An office where information concerning lodgings will be ob- 
tainable will be opened at the Municipality of Genoa. 
Signed for the Committee, PROF. O. PENZIG, Secretary. 
Botanical Notes. 
Note on some Characee. The Characez sent from the Depart- 
ment of Agriculture, collected in the Sand Coulee of Montana by 
Mr. Williams, were determined by me some time ago, as stated 
in BULLETIN, vol. xviii. p. 194. Later Characez from Crater Lake, 
on Mount Agassiz, caused me to review more critically the above 
collection of Mr. Williams, and I find that the plants named 
Nitella opaca occur also in Crater Lake, and differ from NV. opaca 
so decidedly as to form a new. species which I have named N 
Montane. A description and illustration are in preparation, with 
a revision of the “ opaca” section of Witel/a, giving us two new 
allied species, namely, V. Temiscouate and N. Montane. 
; Chara evoluta, Allen, from British America, is probably iden- 
tical with C. Altatca, A. Br. T.. F. ALLEN. 
The editor of “La Notarisia” requests all those who are in- 
terested in the study of Algz, to send him a copy, (or, if possi- 
ble, two,) of such writings as they may publish from time to 
time, it being his intention to have them reviewed in his publica- 
tion. They will receive in return a copy of “‘ La Notarisia” con- 
taining the review, ora reprint of the same. “La Notarisia i 
publishes all “ oblata and desiderata ” and any other communica- 
tions that may be of interest to algologists. 
