57 
the ready aid furnished to complete the list of our genera and 
species. 
Among the most recent papers is a pamphlet of twenty pages 
and four plates, extracted from the Journal of the Linnean 
Society, (London, January, 1886,) by W. Joshua; F.L.S., contain- 
ing a list of Burmese Desmidiee, and descriptions of new species 
occurring in the neighborhood of Rangoon, the whole making a 
large and valuable accession to the knowledge of this family of 
Fresh-water Algz. 
Messrs. Roy and Bisset, of Aberdeen, Scotland, have made 
a useful print of a number of new forms mostly from Great 
Britain which came under their observation. 
Thanks also are due to Prof. J. Schaarschmidt, of Hungary - 
for calling attention, in this BULLETIN, to three species of Amer- 
ican Desmids, noted in a work of P. Reinsch, 1875, omitted from 
my DESMIDS OF THE UNITED STATES. The three forms are 
Xanthidium Nordstedtianum, Reinsch, a Cosmarium without a 
name, and Staurastrum pseudo-Cosmarium. The first appears 
to be the same as Xanthidium fasciculatum, described and 
figured by Delponte in his DESMIDIACEARUM SUBALPINARUM, 
1873. Differing considerably from the usually accepted form, I 
described it in this journal, January, 1885, as X. fasciculatum, 
var. subalpinum. Delponte’s description was given two years 
earlier than that of Reinsch, and hence has the claim of priority. 
The second, Cosmarium, Dr. Schaarschmidt named C. Retuschiz. 
The third is a form I have not recognized; it must be added to 
our list of Desmids. 
Mr. Alfred W. Bennett, F.R.M.S., Lecturer on Botany at St. 
Thomas’ Hospital, has published a paper of much interest in the 
February number of the Journal of the Royal Mic. Soc., “On 
the Fresh-water Algz of the English Lake District, with descrip-_ 
tions of twelve new species,” illustrated with two plates. 
Mr. W. Barwell Turner, F.R.M.S., read a paper, November 
11, 1885, before the Royal Microscopical Society, London, — 
(see Journ. R. M. Soc., December, 1885 and Bull. Torr. Bot. Club, 
December, 1885), on what he believes are some new and rare 
Desmids of the United States, but which were mainly derived 
by him from sources that had been already examined and 
