VOL. IV. ] Recent Literature. 309 
upon the shell of Nenia, where it formed deep-green spots and 
was very conspicuous. This species, which shows several 
differences from 7. We/ckeri, hitherto the only know species of 
this genus, is described as new and named 7: Neniz Lagerh; 
it was collected in Ecuador. 
It seems more than probable that the occurrence of these 
Algze upon living animals is a matter of protection; we remem- 
ber for instance the numerous constellations that occur on the 
bottom of the sea, where Crustacea: Hyas and others are walk- 
ing around, covered with a whole forest of Algze, Hydrozoa, 
etc., so that the Hyas itself is hardly visible. 
G. DE LAGERHEIM: The glacier-flora in Ecuador.* 
The summits of all the higher volcanoes of Ecuador are covered 
with snow, which persists through the summer. This snow is 
hard like ice, but is, nevertheless, inhabited by a flora, of which 
the author gives a very interesting sketch in the present paper. 
It was especially some earlier investigations upon the same 
flora, but from collections made in the arctic region, which 
induced the author to secure material from the volcanoes 
in Ecuador; these earlier studies were made by Berggren and 
Wittrock, and by the author himself. 
The material was collected upon the snow, which showed the 
well-known phenomenon of having a deep pink color, the 
so-called ‘‘red snow,” and the author enumerates several 
cryptogames, especially Algze, as representatives of this singular 
vegetation. 
Chlamydomonas sanguinea, C. asterosperma, C. glacialis, 
Raphidonema nivale, Selenotila nivalis are described and figured 
as new, and the species of Chlamydomonas were the most fre- 
quent forms in the red snow. Some other genera were also 
represented, as for instance: Bichatia, Nostoc, Navicula, Mesotze- 
nium, Gloeocystis and others. Of Fungi were observed Chy- 
tidrium and the new genus Selenotila, while Phz/odina roseola, 
which occurred together with the red Chlamydomonades, was the 
only representative of the animal kingdom. 
* Die Schneeflora de: Pichincha. Ein Beitrag zur Kenntniss der nivalen 
Algen und Pilze. (Berichte d. deutsch. bot. Gesellschaft, Berlin, 1892. 
Vol. 10, Heft 8, p. 517.) 
