342 Transactions.— Botany. 
Surirella contorta, F. Kitton, n.s. 
This species is supposed at present to be peculiar to New Zealand, and 
besides appearing in Lake Sumner deposit, it is found in deposits from 
Manawatu and Whangarei. Mr. Kitton described it in the Monthly Micro- 
scopical Journal for November, 1874, as follows :— 
** Valve elliptically or slightly ovate, canaliculi fine, numerous ; ale in- 
conspicuous, narrow median elevation terminating in short spines, surface 
of valve obscurely striate, valve in front view contorted." 
Plate XXIX., fig. 2, side view. 
Stauroneis (or Pleurostauron) fulmen, Brightwell, n.s. 
This form is very scarce in the deposit, but was found quite recently by 
me in quantity in freshwater at Ngapari, Fernside, and was described as 
S. huttonii in a paper I read at a meeting of the institute on the 4th May 
as follows :— 
** Front view oblong, with a marked depression at the line of suture, 
length rather more than six times its breadth. Side view, with three infla- 
tions on both sides, those at each end slightly less than those in the middle, 
valve narrowing towards the ends, which are obtuse. Stauros, linear, 
dilated towards the margin of valve, reaching the margin. Length, -008 of 
an inch." 
I subsequently found that it had been figured and described in almost 
identical terms in the Proceedings of the Royal Microscopical Society, 
volume 7, page 179, by Mr. Brightwell as “freshwater, Melbourne." I have 
accordingly withdrawn the paper. 
Hab. Freshwater, Melbourne; Ngapari, Fernside; fossil, Onehunga ; 
Lake Sumner; Amberley. . 
Plate XXIX., fig. 3, a. front view, b. side view. 
Of the three species just described—specially New Zealand forms—I 
have thought it desirable to reproduce the figures. 
The following is alist of the species already found, for which I am 
indebted chiefly to the kindness of Mr. E. Grove, of Saltburn, England :— 
Epithemia zebra, var. proboscidea. 
p? sorex. 
» gibba. 
x urgida. 
Eunotia prærupta var. bidens. 
^d eruca (amphicampa). 
Eucyonema gracile. 
cespitosum var. 
alis. j 
Surirella splendida. 
» contorta, n. s. 
