140 



The Natuealist. 



I have now enumerated the most interesting records of the past year,, 

 and shown as definitely as I possibly coald the relative abundance or 

 scarcity of species, and indicated the additions to the list, for 1881» 

 I shall at any time be glad of any information on the lepidopterous 

 fauna (or in fact any other order of the Insects) of the district, with a 

 view of preparing a complete list of the species for future publication 

 in the Naturalist. 



24, Yalley-street, Valley-road, 



Bradford, Feb. 15th, 1882. 



NOTES UPON THE SYSTEMATIC ARRANGEMENT OF 

 THE BOG MOSSES. 



(Concluded.) 



By G. Limpricht. 



(Translated..) 



With respect to many mosses, the question which are species and- 

 which are varieties, will be debated so long as there are bryologists, 

 and in the above instance it is indeed very difficult to make a distinc- 

 tion. Both Russow's series, a keterophyllum and (3 uojyJiylliim^ 

 have many characters in common with one another, but they can 

 always be separated by the size, form, and cell structure of the stem- 

 leaves. 



With 6". suhsecmidwn veriim.^ N. ab E. {S. subs, a heterophyllum^ 

 Russow ; S. savifolinm b imUe^ Warnst, I.e., p. 86) the cells in the 

 lower half of the stem-leaves lessen considerably from the centre 

 towards both margins, whereby the stem-leaves appear to have very 

 broad borders (Russow, I.e., p. 72), as is the case also with S. recur- 

 -oum ; on the contrary, the stem-leaves of /3 isopJiyllum {coiitortum, 

 obesum, miricuUMm) possess round to the base an equally broad 

 border. Referring to the shape of the stem-leaves, the last series 

 allows two sub-divisions to be made, with the one isophyllum^ 

 Russow, in which the stem-leaves are similar to the branch ones, 

 therefore oval from a narrower base, with the others, S. con 

 tortum and auriculatum, on the contrary, they are from a broader base 

 Ungulate. 



Sphagnum laricinum, Spruce (1847), already known to Russow and 

 also to Milde through Rabenhorst's Bryotheca, No. 712, as S. larici- 

 sinum, Spruce.. 



