THE GENEEA OF MOSSES. 
45S 
to have escaped the penetrating eye of Mr Brown. 
(Fabry's First Voyage, Append.) 
S. mnioides. In native specimens of this species we 
have had no difficulty in observing either 8 equi- 
distant bigeminate teeth, or 16 unigeminate ones, 
geminating in pairs. In specimens which we regard 
as belonging to this species, brought from the Arc- 
tic regions by Captain Parry, the teeth are ex- 
tremely pellucid, and the line down each of the 16 
teeth either very faint or invisible. None of the 
published figures of the peristomes are correct. 
9. S. urceolatum. Hedwig, and also Sturm in "Deutsch- 
lands Flora," figure a peristome of 8 once geminated 
teeth. In " Flora Danica,'' t. 1S61, there are re- 
presented 16 single equidistant teeth. We have 
found 8 equidistant, marked with 3 lines, at none 
of which have we observed any ultimate separation, 
10. S. angustatum. Brown, in Parry's Voyage (Ap- 
pendix), has observed the peristome to consist of 4 
bigeminate teeth. We have also seen it of 4 teeth, 
but in our specimens they are satisfactorily quadri- 
geminate. We find it, however, still more frequent- 
ly of 16 unigeminated, the hne more obscure than 
in many other species. 
11. ^S*. lufeum. Teeth 16, unigeminated, and so closely 
geminating in pairs as often to appear like 8 equi- 
distant bigeminated ones. The only good repre- 
sentation of the peristome is in Schw^grichen's 
figure of *S'. melanocaulon (SuppL S.), which we do 
not consider different. 
IS. S, ruhrum. Peristome in every respect similar to the 
preceding. 
From the above detail of facts and remarks, it appears, 
