THE GENERA OF MOSSES. 149 
tion of one species of which he published in 1818. An 
excellent figure is also given by Dr Hooker of the same 
in his " Musci Exotici,'"* taken from specimens communi- 
cated by Dr Hornschuch. This genus, though of such 
recent discovery, was again met with soon afterwards in a 
different part of the world, Melville Island ; in which some 
specimens were collected, and from whence they were 
brought to this country by Captain Sabine, who accom- 
panied Captain Parry in his late adventurous and ever 
memorable Arctic expedition, Although the quantity from 
that habitat was small, yet having observed plants of it in 
the possession of two or three individuals, always retaining 
the same characters, and having examined our own speci- 
mens minutely, we have been induced, on really finding 
them to differ materially from the plants gathered by Pro- 
fessor HoRNSCHUCH, to propose them as distinct species, 
with the following characters : 
1 . Voitia nivalis, caule elongato ramoso Jbliis ovato^ 
lanceolatis, concaviusculus, notabiliter acuminatis ; 
tJieca ohlongo-ovata ; operculo obtusiusculo. 
2. V. hyperborea, caule elongato subsimplici, Jbliis late 
ovatis vioo acuminatis^ valde concavis ; theca ovato^ 
globosa ; operculo acnto. 
1. Voitia nivalis. Stems elongated, branched; leaves 
ovato-lanceolate, slightly concave, much acuminat- 
ed ; theca oblongo-ovate ; summit of the operculum 
rather obtuse. 
% V. hyperborea. Stems elongated, nearly simple ; leaves 
broadly ovate, sub-acuminate, very concave ; theca 
ovato-globose ; summit of the operculum acute. 
