138 
Anderson said in a letter several years ago to one of the writers, 
that he had never seen a typical specimen of B. vagum from 
this country, but had specimens from Europe. But Mr. Wolle, 
in Fresh-Water Alge, on p. 57, says that typical specimens 
are to be found in Maine and Canada. 
Chantran’sia violacea, Kg. var. KELSEYi. Anderson, new var. 
Tufts dense, frequently hemispherical, usually solitary, black- 
ish-green, glossy, drying dull on paper, and fading to dark oliv- 
aceous; one to about two lines high. Filaments straight or 
slightly curved from the base, smooth, dilute green to pale olive 
green; branches ascending or almost erect, the ends obtuse, 
frequently rounded and slightly swollen, and occasionally some- 
what elongated, 4-8 “ wide, by 33-55 “long. Fertile branches 
commonly shorter; carpogons 6-10 yu wide by 10-14 plong. On 
the wet wood-work of a mill race, and on stones in shallow water, 
Great Falls, Montana, March, 1887.* ; 
Enteromorpha intestinalis (Linn.), Link, var. prolifera, Ag. 
Very abundant in the Upper Missouri River, and clear, cold 
mountain streams tributary thereto. Found in these streams 
at an altitude of 6,000 feet. At first filamentose, arising from a 
densely interwoven base formed of similiar threads attached to 
stones, finally becoming inflated and sparingly branched, rising 
to the surface and floating in free masses. The individual fronds 
frequently attain a length of eight feet. May be found all the 
year, but most abundant in spring and summer. See Wolle’s 
Fresh- Water Algz, p. 338. 
Draparnaldia glomerata, Ag. Abundant in all of our clearer 
streams and springs, attached to sticks and stones. At first 
bright green, and forming in roundish masses, firmly attached to 
the substratum, after the manner of a Nostoc ; later becoming 
watery by the partial dissolution of the amorphorus gelatinous 
sheathing mass, and floating free on the surface of the water, or 
caught around the stems or leaves of submerged living plants. 
June to October. 
Draparnaldia plumosa, Ag. A small but remarkably robust 
specimen was found attached to a small pebble in an arm of the 
*The general appearance of this plant is similiar to that of small specimens of 
Tolypothrix pulchra , Kg., which it was taken to be, until last year, when I had oc- 
casion to compare my species of Tolypothrix microscopically, and made this dis- — 
covery.—A, 
