
412 THE AMERICAN NATURALIST. [Vor. XXXVI. 
considered merely forms of the other eight. A new species, 
N. corallinarum, is added, together with the New Zealand species, 
N. harveyanum, making the final list ten. 
The genus has a world-wide distribution and includes many hand- 
some species, with large, delicate, more or less veined membranes of 
various shades of red. The Californian species are not inferior to 
others in size and beauty, and the present paper gives a careful 
study of them, with ample description, full synonymy and references. 
The considerable variation occurring in some species is noted as 
accounting for the new species proposed by Agardh; unless one had 
a large series of forms of JV. ruprechtianum, for instance, it would be 
perfectly natural to describe extreme forms as distinct species. 
The plates illustrating this paper are by a photolithographic process, 
and, while showing fairly well the habit of the broader membraned 
species, are less satisfactory with the other species. Dependence in 
determining must be had on the text and the references to exsiccate. 
Alaskan Algæ.— This paper! gives quite an addition to our 
knowledge of the marine and fresh-water flora of our northwest 
coast, nearly half of the marine and more than half the fresh-water 
species being new to Alaska. The really northern flora of the west 
coast begins at Puget Sound, practically all the species from this 
point north being distinctively northern in character, though some 
of them extend south to central California. Of the red and brown 
alez, 55 are circumpolar or found in the north Atlantic, 49 peculiar 
to the Pacific. In the table, p. 394, these 49 species are in a column 
headed “ Peculiar to the Pacific Coast of North America." As this 
column includes such Asiatic species as Cystophyllum lepidium and 
Odonthalia kamtschatica, and such south Pacific species as Macro- 
cystis pyrifera, the heading is very misleading. If it were intended 
to say that they were not found on any coast of North America 
except the Pacific, it would be true, but that is not the natural 
meaning of the words. Nine new species are described and fig- 
ured by Mr. Saunders, Streblonema pacificum, S. irregulare, S. minutis- 
simum, Dermocarpa fucicola, Homeostroma lobatum, Mvyelophycus 
intestinalis, Coilodesme linearis, Mesogloia simplex, and Alaria fra- 
gilis; also Pleurophycus gardneri Setchell and Saunders ; a few less 
familiar forms already described are figured, a plate is given of a 
s Saunders, De Alton. Papers from the Harriman Alaska Expedition. XXV. 
The Algæ. Proc. Wash. Acad. Sci, vol. iti (Nov. 15, 1901), pp. 391-486, 
-o Pls. XLITI-LXIL. 


