MICRO-ORGANISMS IN SUTTON PARK. 
173 
MICRO-ORGANISMS IN A SWAMPY DITCH IN 
SUTTON PARK.* 
BY T. BOLTON, F.R.M.S. 
In a swampy ditch in Sutton Park, not more than thirty 
yards long and one yard wide, in which a quantity of sphag¬ 
num was growing, I have found in the course of the last six 
months a great variety of interesting organisms, more than 
a hundred in number, and including several new species. 
For the identification of the desmids and diatoms I have 
had the assistance of Dr. Anthony and another correspondent. 
Dr. Hudson and Mr. Gosse have helped me as to the rotifers, 
and the finding in this ditch of Notommata spicata (described 
by Dr. Hudson before the Royal Microscopical Society in 
May last) led me to make a more systematic examination of 
its contents. Mr. Gosse has identified from the same source 
a great number of free-swimming rotifers, several being new, 
and others so rare that he had not seen them before. 
Diatoms. 
Xitzschia sigmoidea. 
,, Tania. 
Pinnularia nobilis. 
,, major. 
,, lata. 
Navicula ovalis. 
Stauroneis Vhardcenteron. 
,, gracilis. 
Surirella bifrons. 
,, gibba. 
On the diatoms from this locality I have occasionally seen 
the growth of numerous filaments resembling those described 
by Mr. Badcock in the “ Journal of the Royal Micr. 8oc.,” 
1884, p. 352, figs. 49, 50. I believe them to be of an algoid 
or fungoid nature. 
Desmids. 
Hyalotheca dissiliens. 
,, dubia. 
Micrasterias denticulata. 
,, rotatai 
,, ovata. 
Euastrum oblongum. 
,, crassum. 
,, Didelta. 
,, ansatum. 
Closterium lanceolatum. 
,, turgidum. 
,, Ehrenbergii. 
,, moniliferum. 
,, Diana. 
,, didymotocum. 
,, lineatum. 
,, striolatum. 
,, Cornu. 
* Transactions of the Birmingham Natural History and Micro¬ 
scopical Society. Head February 16th, 1880. 
