94 
NEW BRITISH FRESH WATER ALGJS. 
granules, which are wanting at the two extremities ; two con- 
spicuous pyrenoids in each semi-cell. 
In bog pools. Hindhead. 
Cosmarium Westianum. Benn. Journ. R. M. S. f 1892, t. n . y Jig. 14. 
Medium size. Semi-cells suhreniform. Length of frond about 
52 /X, ; breadth about 50 p, ; sides 17*5 somewhat converging 
towards the apex, with about four deep crenations ; apex about 
25 fi long, slightly convex, with five shallow crenations ; at the 
corners, between the sides and the apex, is a bifid projection ; 
sinus rather wide. Membrane quite smooth, but with conspicuous 
punctations arranged in regular series, wanting in the isthmus. 
One conspicuous pyrenoid in each semi-cell. 
In bog pools. Hindhead. 
The species not before recorded for Great Britain, although 
previously recorded for Ireland, are : — 
Closterium calosporum, Wittr. 
Mesotaenium chlamydosporum, DBy. 
Staurastrum aversum, Lund. 
The species called Nostoc hyalinum (Benn.), Journ. R. M. S., 
1887, t. 1, f. 2, is here named Nostoc opalinum (Benn). 
MEMORABILIA. 
Pilocratera Engleriana, Henn. in Engl. Bot. Jahr., 1891, 
p. 363 ,pl. vi., fig. 9, seems to he Trichoscyplia Hindsii (Berk.) 
Cooke Myco., f. 200. 
Endoconidium ampelophilum, Pat. Bull. Soc. Myc. de Fr. y 
vii., 1891, p. 183. Can any one demonstrate how the genus 
Endoconidium (Pr. & Del.), differs from Bloxamia (B. & Br.), 
at least as interpreted by Patouillard ? 
TRANSACTIONS OF THE YORKSHIRE NATURALISTS’ 
UNION. 
Although not containing anything of interest to Cryptogamic 
Botanists, we have to call attention to the above useful Transac- 
tions, and especially to Parts 11, 12, 13, and 15, which contain a 
second edition of “ North Yorkshire ; studies of its Botany, 
Geology, Climate, and Physical Geography,” by J. G. Baker, 
F.R.S. The portion issued consists for the most part of the 
Introduction, and the essays on the Geology, Lithology, Clima- 
tology, Topography, and Physical Geography, with descriptions of 
the several districts. This is certainly a valuable contribution to 
local scientific literature, and will commend itself to all who are 
interested in the “ big county.” 
